List of scheduled monuments in Anglesey

Anglesey includes the largest island in Wales, as well as various smaller islands. Just as Anglesey is joined by bridges to the mainland, so Holy Island is linked to Anglesey. The 143 scheduled monuments cover over 4,000 years of the history of the islands. Spread throughout the interior and especially the coast of the islands there are 89 prehistoric scheduled sites, including chambered tombs, burial cairns and standing stones, hillforts, hut circles and a henge. Six sites date from the Roman period, and seven from early medieval times. The 18 sites from the medieval post-Norman period include spectacular castles, remote dwellings, and wells, stones and churches. Finally the modern period is mainly agrarian in its purposes, but also includes the copper, coal and brickmaking industries. After a spell as part of Gwynedd, the Isle of Anglesey County now covers the same area as the historic county of Anglesey.

Map of the communities of the Isle of Anglesey, Wales

Scheduled monuments are found in 34 of the 40 Community areas on the Isle of Anglesey. Clusters are found in Moelfre on the eastern side (14), Trearddur on Holy Island (11), Llanidan overlooking the Menai Strait (10) and Llangoed in the far east (10). One site, Beaumaris Castle, is part of a World Heritage Site and this plus a further 22 of the monuments are in the care of the Welsh heritage agency, Cadw.

Scheduled monuments have statutory protection. The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales.[1] The list of scheduled monuments below is supplied by Cadw[2] with additional material from Royal Commission on the Ancient and Historical Monuments of Wales and Gwynedd Archaeological Trust.

Scheduled monuments in AngleseyEdit

The list is sorted by period, and then by community so that sites of similar age and locality are placed near each other. Clicking on one of the heading arrows will sort the list by that information.

Image Name Site type Community Location Details Period SAM ID
  Barclodiad y Gawres Burial Chamber   Chambered round barrow Aberffraw 53°12′26″N 4°30′13″W / 53.2072°N 4.5036°W / 53.2072; -4.5036 (Barclodiad-y-Gawres Burial Chamber),
Neolithic chambered tomb overlooking Trecastle Bay. Excavated in 1952-3 it is now consolidated, with lockable iron gates and a concrete domed roof. Several internal stones have Neolithic pecked geometric rock art. Prehistoric
  Din Dryfol Burial Chamber   Chambered long cairn Aberffraw 53°13′30″N 4°24′17″W / 53.225°N 4.4048°W / 53.225; -4.4048 (Din Dryfol Burial Chamber),
The burial mound developed over several phases of stone chambers and wooden posts, culminating in a 3 metres (9.8 ft) high Portal Stone creating a substantial entrance. The mound has now gone, leaving the internal stone structures. Prehistoric
  Mynydd Bach round cairn Round barrow Aberffraw 53°12′31″N 4°30′16″W / 53.2085°N 4.5045°W / 53.2085; -4.5045 (Mynydd Bach round cairn),
A low, grass covered cairn with a stone burial cist in its centre, on a promentary alongside the more impressive Barclodiad y Gawres (AN032). A fragment of Beaker pottery was found in a 1956 excavation suggesting a Bronze Age date. Prehistoric
Bronze Age
  Trwyn Du round cairn Round cairn Aberffraw 53°10′57″N 4°28′02″W / 53.1824°N 4.4671°W / 53.1824; -4.4671 (Trwyn Du round cairn),
A Bronze Age cairn, excavated in 1956 and 1974, had regular sequence large and small kerbstones, some of which are still visible through the grass. The cairn was found to overlay a much older ground surface, which had a great quantity of flint workings, occupation material and two Tranchet axes dated to 7000BC in the Mesolithic. Prehistoric
(Mesolithic &
Bronze Age)
  Werthyr standing stone Standing stone Amlwch 53°24′32″N 4°23′08″W / 53.4088°N 4.3856°W / 53.4088; -4.3856 (Werthyr standing stone),
Standing Stone 3m high between Y Werthyr and Bryn Llwyd farms. Early writings suggest there was a second upright and a long capstone, of which there is now no sign. Prehistoric
(Bronze Age)
  Presaddfed Burial Chambers   Chambered tomb Bodedern 53°17′57″N 4°28′51″W / 53.2992°N 4.4809°W / 53.2992; -4.4809 (Presaddfed Burial Chamber),
Two megalithic stone features, one a dolmen with huge capstone, the other a collapsed stone burial chambers. A 2m gap is between the two features, and it is thought a single mound would once have covered them both, though this has now disappeared without trace. In the care of Cadw, with public access. Prehistoric
  Malltraeth Yard standing stone Standing stone Bodorgan 53°11′49″N 4°23′02″W / 53.1969°N 4.3838°W / 53.1969; -4.3838 (Malltraeth Yard Standing Stone),
Large standing stone, 2.7 metres (8.9 ft) high, beside a railway embankment, north of Malltraeth. It has variously been named Cae Dafydd Maenhir and Trefdraeth Standing Stone. It is a pale igneous rock with many quartz veins. Prehistoric
  Cremlyn Standing Stones Standing stone Cwm Cadnant 53°16′33″N 4°08′40″W / 53.2759°N 4.1444°W / 53.2759; -4.1444 (Cremlyn Standing Stones),
Two standing stones in adjacent fields. The southern one fell over in 1977 and was found to have only 30 cm below ground and 3 metres (9.8 ft) above, wedged in with packing stones. When replaced, it was concreted in. Prehistoric
  Hendrefor Burial Chambers Chambered tomb Cwm Cadnant 53°16′22″N 4°10′28″W / 53.2729°N 4.1744°W / 53.2729; -4.1744 (Hendrefor Burial Chambers),
Two stone chambers, 7 metres (23 ft) apart, which would once have been buried under a single long mound. One was recorded as intact in 1802, but by 1825 only one upright remained standing, which remains 2.7 metres (8.9 ft) high. Also called Ucheldref Burial Cairn. Prehistoric
Pen-y-Maen Standing Stone Standing stone Cwm Cadnant 53°14′34″N 4°09′09″W / 53.2427°N 4.1526°W / 53.2427; -4.1526 (Pen-y-Maen Standing Stone),
Slender standing stone, 1.65 metres (5.4 ft) high, in a field near Llandegfan. The base has worn down to reveal packing stones. Prehistoric
Ty-Wyn Standing Stone Standing stone Cwm Cadnant 53°14′34″N 4°10′08″W / 53.2428°N 4.1689°W / 53.2428; -4.1689 (Ty-Wyn Standing Stone),
Tapering slab, 3 metres (9.8 ft) high and .8 metres (2.6 ft) wide, on a rise north of Menai Bridge. Also called Plas Cadnant Standing Stone and Ty Gwyn Standing Stone. Large packing stones are visible at the base. Prehistoric
  Pen-yr-Orsedd Standing Stones Standing stone Cylch-y-Garn 53°23′02″N 4°30′26″W / 53.384°N 4.5073°W / 53.384; -4.5073 (Pen-yr-Orsedd Standing Stones),
Two large slab standing stones (with reports of a now lost third), 230 metres (250 yd) apart. They are both over 2.7 metres (8.9 ft) high and 1.2 metres (3.9 ft) wide. The name may derive from 'Gorsedd' (meetings place). Prehistoric
  Ty Mawr Standing Stone   Standing stone Holyhead 53°17′48″N 4°37′17″W / 53.2967°N 4.6214°W / 53.2967; -4.6214 (Ty-Mawr Standing Stone),
A contorted and irregular stone block with dramatic 'swirls' in the bedding plane. It stands on a prominent site south of Holyhead. Prehistoric
  Bryn Celli Ddu Burial Chamber   Burial Chamber Llanddaniel Fab 53°12′28″N 4°14′10″W / 53.2077°N 4.2361°W / 53.2077; -4.2361 (Bryn-Celli-Ddu Burial Chamber),
One of the finest passage tombs in Wales, with a mysterious pillar within the burial chamber, a 'Pattern Stone' carved with sinuous serpentine designs, and before all that it was a henge with a stone circle. Excavated and re-constructed in 1928–9. Now in the care of Cadw. Prehistoric
Bryn-Celli-Ddu Standing Stone Standing stone Llanddaniel Fab 53°12′25″N 4°14′17″W / 53.2069°N 4.238°W / 53.2069; -4.238 (Bryn-Celli-Ddu Standing Stone),
Low standing stone, wider than it is high. Only the presence of possible packing stones, and a suggested alignment with the nearby Bryn-Celli-Ddu chambered tomb indicate anything other than a natural boulder. Prehistoric
  Bryn-yr-Hen-Bobl Burial Chamber Chambered round cairn Llanddaniel Fab 53°11′50″N 4°13′06″W / 53.1972°N 4.2184°W / 53.1972; -4.2184 (Bryn-yr-Hen-Bobl Burial Chamber),
'Hill of the old people' is a substantial mound with a stone chamber. Bones were found here in 1754, and along with Plas Newydd Burial Chambers (AN005) it was included in the first Ancient Monuments Act in 1882. It was excavated by W J Hemp in 1929–35, and Neolithic pottery appeared to lie under and in front of the mound, suggesting a settlement predating its use as a burial site. The chamber was given a doorway following the dig, but is not accessible to the public. It is visible from the southern edge of Plas Newydd Garden Wood. Prehistoric
  Plas Newydd Burial Chambers Chambered tomb Llanddaniel Fab 53°12′14″N 4°13′04″W / 53.2038°N 4.2179°W / 53.2038; -4.2179 (Plas Newydd Burial Chambers),
Two adjoining stone chambers of a Neolithic burial cairn form a cromlech on private lawns of Plas Newydd National Trust Country House. The monument, along with nearby Bryn-yr-Hen-Bobl, was one of only three Welsh entries in the initial Schedule of the Ancient Monuments Protection Act 1882 Prehistoric
  Tyddyn-Bach Standing Stone Standing stone Llanddaniel Fab 53°12′32″N 4°14′34″W / 53.2089°N 4.2428°W / 53.2089; -4.2428 (Tyddyn-Bach Standing Stone),
The 3 metres (9.8 ft) high pointed stone is surrounded by a pile of more recent field clearance boulders. Reportedly the stone is set into a hole or socket in the bedrock. A small tree has become established, growing through the boulders. Prehistoric
Llanddona Standing Stone Standing stone Llanddona 53°17′41″N 4°09′02″W / 53.2946°N 4.1506°W / 53.2946; -4.1506 (Llanddona Standing Stone),
Small (1.7m high) jagged and much weathered upright stone, tapering to a sharp point. It is near Bwlch Farm, west of Llanddona village. Prehistoric
Hirdre-Faig Standing Stone Standing stone Llanddyfnan 53°14′49″N 4°16′23″W / 53.247°N 4.2731°W / 53.247; -4.2731 (Hirdre-Faig Standing Stone),
Large igneous slab, with distinctive quartz veins in a field east of Hirdre-Faig farm. It stands on a shallow ridge in an area known as Penmynydd. Prehistoric
  Llanddyfnan Standing Stone Standing stone Llanddyfnan 53°16′59″N 4°14′57″W / 53.283°N 4.2492°W / 53.283; -4.2492 (Llanddyfnan Standing Stone),
Slender pillar, 2.4 metres (7.9 ft) tall near the road to Llanddyfnan church. It had been leaning at an angle of 45° by 1970 and was set upright again some time before 1986. A museum of all things stone-related stands just over the road. Prehistoric
  Maen Addwyn Standing stone Llanddyfnan 53°19′29″N 4°18′46″W / 53.3247°N 4.3129°W / 53.3247; -4.3129 (Maen Addwyn),
Ivy-covered 3m high stone beside a road. It was formerly known as Maen Fabli, whilst another stone,that stood 500m to the north, was called Maenaddwyn, and gave its name to the crossroads at which it stood. Prehistoric
  Tŷ Newydd Burial Chamber   Chambered tomb Llanfaelog 53°14′09″N 4°28′57″W / 53.2359°N 4.4824°W / 53.2359; -4.4824 (Ty-Newydd Burial Chamber),
A huge capstone resting on three uprights formed a spectacular monument, described in 1865 as "one of the gems of the Anglesey Cromlechs".[25] It was excavated in 1936 and a Beaker fragment indicated the Neolithic tomb was re-used during the Bronze Age. The monument is in the care of Cadw, with public access. In recent years, the capstone cracked, since which the whole has been supported by two brick piers. Prehistoric
  Capel Soar Standing Stone Standing stone Llanfaethlu 53°20′49″N 4°31′35″W / 53.347°N 4.5264°W / 53.347; -4.5264 (Capel Soar Standing Stone),
Large and prominent standing stone beside the A5025 and close to a Baptist Chapel on an exposed part of north-west Anglesey. It is a slab, 3.2 metres (10 ft) high, and 1.7 metres (5.6 ft) wide at its base, tapering to a rounded top. Prehistoric
  Ty Mawr Burial Chamber Chambered tomb Llanfair Pwllgwyngyll 53°13′34″N 4°11′25″W / 53.2262°N 4.1902°W / 53.2262; -4.1902 (Burial Chamber 180m NE of Pen-y-Berth),
This Burial Chamber on the eastern edge of Llanfair PG, (described on the schedule as 180m NE of Pen-y-Berth), has a large capstone now resting on its collapsed support stones. It was a simple passage grave, suggesting an earlier date than most of the Anglesey neolithic tombs. Prehistoric
Benllech Megalith: Goosehouse Unclassified site Llanfair-Mathafarn-Eithaf 53°19′13″N 4°13′29″W / 53.3202°N 4.2247°W / 53.3202; -4.2247 (Benllech Megalith: Goosehouse),
During sewer works in 1965 what was thought to be a small stone burial chamber was found in what is now an area of housing in Benllech. No ancient remains were found, and the presence of a medicine bottle suggested a more modern date. This left the question of what it might be. A stone goose-pen, corn drier, or a folly have all been suggested but are by no means convincing. In the absence of an explanation it retains its listed status. Prehistoric
(probably not)
  Glyn Burial Chamber, Benllech Burial Chamber Llanfair-Mathafarn-Eithaf 53°18′42″N 4°13′54″W / 53.3116°N 4.2317°W / 53.3116; -4.2317 (Glyn Burial Chamber, Benllech),
Limestone capstone, which appears to be a piece of the local bedrock, levered up and propped in place by other stones. The rise in ground around it may represent a 14m circular mound or cairn that originally covered it. Partial excavation by E.N. Baynes in 1909 found that 'treasure seekers had cleaned out the whole of the chamber'. Prehistoric
  Pant-y-Saer Burial Chamber Chambered tomb Llanfair-Mathafarn-Eithaf 53°19′03″N 4°14′23″W / 53.3175°N 4.2397°W / 53.3175; -4.2397 (Pant-y-Saer Burial Chamber),
Two large upright stones support a large capston, which now leans at a steep angle. It was 'plundered' in 1874 when a visitor dreamed of a crock of gold, but found only bones.[31] A full excavation by Lindsay Scott in 1933 found late neolithic and early Bronze Age burials of 54 individuals. The base of the chamber was cut into the bedrock, and the whole was covered by a mound with stone edging.[32] Prehistoric
  Henblas Burial Chamber Chambered tomb Llangristiolus 53°13′17″N 4°21′34″W / 53.2214°N 4.3594°W / 53.2214; -4.3594 (Henblas Burial Chamber),
Three enormous boulders: two blocky and fairly upright, the other a vast slab. They are thought to be glacial erratics which have not travelled far. Striation details suggest some manoeuvering has taken place, and therefore they were probably adapted to create a huge burial tomb. Unverified 19th century reports claimed to have found an urn containing ashes and a ring of blue glass. Prehistoric
  Bodowyr Burial Chamber   Chambered tomb Llanidan 53°11′18″N 4°18′10″W / 53.1882°N 4.3029°W / 53.1882; -4.3029 (Bodowyr Burial Chamber),
Five surviving uprights formed the walls of a small stone chamber. Three of these now support a large mushroom shaped capstone, with one stone not reaching the capstone, and one fallen down. The whole, although never excavated, has been consolidated and fenced for protection from livestock and to facilitate public access.It is under the guardianship of Cadw, and commands spectacular vies of Snowdonia. Prehistoric
  Bryn Gwyn stones Stone Circle Llanidan 53°10′38″N 4°18′08″W / 53.1772°N 4.3022°W / 53.1772; -4.3022 (Bryn Gwyn stones),
Two huge standing stones on a field boundary and path east of Brynsiencyn. The taller is 4.2 metres (14 ft) high, the tallest on Anglesey. Excavations in 2010 confirmed there were once 8 stones, forming a 16m wide circle, with a further stone inside the circle, perhaps aligning with the nearby henge at Castell Bryn Gwyn (AN015). Prehistoric
  Perthi-Duon Burial Chamber Chambered tomb Llanidan 53°10′34″N 4°16′34″W / 53.1761°N 4.276°W / 53.1761; -4.276 (Perthi-Duon Burial Chamber),
Massive stone long-identified as a possible burial chamber capstone, in a field west of Brynsiencyn. Doubts have been expressed on whether it was used in such a way, or is simply a glacial erratic. However, the site was excavated by the WRAO team in 2012 and the results clearly showed it was a Neolithic stone chambered monument (as shown by Rowlands in 1823). Several of the original uprights were incorporated into a nearby field boundary. The excavation also yielded flint and a curious piece of [stratified] copper. Prehistoric
  Trefwri Standing Stone Standing stone Llanidan 53°11′07″N 4°16′55″W / 53.1853°N 4.282°W / 53.1853; -4.282 (Trefwri Standing Stone),
There are two standing stones at the eastern end of the prehistoric settlement of Trefwri (see also the Pont-sarn hut circles AN087). The smaller stone, (in photo), is less convincing as an ancient stone than the larger one 200m to the east. Prehistoric
  Llech Golman Standing stone Llannerch-y-medd 53°19′20″N 4°19′33″W / 53.3222°N 4.3257°W / 53.3222; -4.3257 (Llech Golman),
large blocky standing stone on an undulating ridge. It is 2.4 metres (7.9 ft) high, with packing stones exposed around the base. Prehistoric
  Bodewryd Standing Stone Standing stone Mechell 53°23′05″N 4°23′52″W / 53.3847°N 4.3978°W / 53.3847; -4.3978 (Bodewryd Standing Stone),
At some 4m high this stone slab is one of the tallest standing stones on Anglesey. Prehistoric
  Baron Hill Maen Hir Standing stone Mechell 53°23′47″N 4°27′11″W / 53.3963°N 4.4531°W / 53.3963; -4.4531 (Baron Hill Maen Hir),
A large standing stone 410m North of St Mechell's Church, Llanfechell. During re-seating of the stone in 2010, it was found that one of the packing stones had prehistoric patterned carvings. Prehistoric
  Llanfechell Triangle Standing Stones Standing stone Mechell 53°23′48″N 4°27′43″W / 53.3966°N 4.462°W / 53.3966; -4.462 (Standing Stones),
Three Bronze Age Standing Stones, each some 2m high, at the top of a low ridge. Prehistoric
  Lligwy Burial Chamber   Chambered tomb Moelfre 53°21′00″N 4°15′10″W / 53.3499°N 4.2529°W / 53.3499; -4.2529 (Lligwy Burial Chamber),
Huge capstone supported by 8 side stones, all of locally occurring limestone. Described in 1781, excavated in 1909, it contained numerous Neolithic flints and pots, along with 15-30 human burials. Possible East, West and South alignment of stones suggest astronomical purposes Prehistoric
Ogof Arian Cave Cave Moelfre 53°22′07″N 4°16′41″W / 53.3686°N 4.2781°W / 53.3686; -4.2781 (Ogof Arian Cave),
Cave with an inner chamber that runs some 25m into the hillside. Neolithic flint tools have been found. Know locally as Ogof Ladran (smugglers cave). Prehistoric
Plas Bodafon Standing Stone Standing stone Moelfre 53°20′40″N 4°17′27″W / 53.3444°N 4.2907°W / 53.3444; -4.2907 (Plas Bodafon, standing stone to WNW of),
In woodland west of Plas Bodafaon, the stone is 1.3m high, of an unusual quartzite. Prehistoric
  Carreg Leidr Standing stone Rhosybol 53°19′58″N 4°20′05″W / 53.3329°N 4.3348°W / 53.3329; -4.3348 (Carreg Leidr),
Upright stone, with an unusual bulbous top. This gave rise to a legend that a thief who had stolen books from the nearby Llandyfrydog Church was turned to stone. The name means 'Thief Stone'. Prehistoric
Llys Einion Standing Stone Standing stone Rhosybol 53°20′45″N 4°21′36″W / 53.3458°N 4.3599°W / 53.3458; -4.3599 (Llys Einion Standing Stone),
small, regular stone in a field south of Rhosybol village. Two vertical grooves on the north side could have been caused by lightning strikes. Prehistoric
Maen Chwyf Chambered tomb Rhosybol 53°20′43″N 4°21′22″W / 53.3454°N 4.356°W / 53.3454; -4.356 (Maen Chwyf),
What some have identified as a large capstone propped up on supporting stones, others suggest is a natural boulder, indistinguishable from other local geology.In the absence of excavation doubts persist on both sides. Prehistoric
  Penrhos Feilw Standing Stones   Standing stone Trearddur 53°17′45″N 4°39′42″W / 53.2957°N 4.6618°W / 53.2957; -4.6618 (Penrhos Feilw Standing Stones),
Two tall standing stones, 3 metres (9.8 ft) high and a similar distance apart. The 1860s had recorded suggestions of a cist burial and a stone circle, but neither is in evidence. They area also known as the Plas Meilw standing stones. Prehistoric
  Trefignath   Chambered round barrow Trearddur 53°17′36″N 4°36′51″W / 53.2932°N 4.6142°W / 53.2932; -4.6142 (Trefignath Burial Chamber),
Neolithic tomb, expanded over three periods, each building a new chamber to the east of the previous, retaining the original alignment. It was noted in 1655, with 18th century plundering of the cairn and capstones, and reported finds of urns and bones. The most recent chamber, in use until 2250 BC, retains an elaborate entrance with tall upright portal stones. Full excavation in 1977-9 by Christopher Smith was followed by consolidation and good public access. Prehistoric
Glan-Alaw Standing Stone Standing stone Tref Alaw 53°20′36″N 4°27′09″W / 53.3433°N 4.4524°W / 53.3433; -4.4524 (Glan-Alaw Standing Stone),
Large slab of stone, 2.6 metres (8.5 ft) high and almost as wide, but only .5 metres (1.6 ft) thick, standing in a field between Glan Alaw and Bod-deiniol farms, east of Llyn Alaw. Prehistoric
  Tregwehelydd Standing Stone   Standing stone Tref Alaw 53°19′10″N 4°29′33″W / 53.3195°N 4.4926°W / 53.3195; -4.4926 (Tregwehelydd Standing Stone),
Accessible from a footpath via Tregwehelydd Farm. It is some 8 feet (2.4 m) high, and a more or less even rectangular shap, but it has split along its bedding planes, and is now in three pieces, which were bolted back together in 1969, with large metal straps. Prehistoric
Castellor Hut Group Unenclosed hut circle Bryngwran 53°15′23″N 4°29′46″W / 53.2565°N 4.496°W / 53.2565; -4.496 (Castellor Hut Group),
There were said to be upwards of 26 round huts, with low walls, paved surfaces, and an impressive selection of Iron Age and some Roman finds. Many of these huts were plundered for stone before a survey and excavations in 1871, and 1900, which found quern, coins, and copper ingots. Six hut outlines remain, and the field has been much ploughed. A possible (but doubtful) stone burial chamber has been described on the western side of the scheduled area. Prehistoric
Iron Age
Enclosed Hut Group West of Mariandyrys Enclosed hut circle Llanddona 53°18′34″N 4°06′29″W / 53.3094°N 4.108°W / 53.3094; -4.108 (Enclosed Hut Group West of Mariandyrys),
Well preserved survival of a group of round, stone-walled hut sites, with two rectangular huts, all enclosed by a low bank. Provides a good comparison with Din Lligwy, AN023. (also called Llaniestyn Hut Group) Prehistoric
Iron Age
Llanddona Hut Circle Unenclosed hut circle Llanddona 53°17′37″N 4°08′30″W / 53.2937°N 4.1417°W / 53.2937; -4.1417 (Hut Circle W of Buarth Cyttir),
Circular earthworks of a prehistoric roundhouse west of Llanddona. Although the banks are up to 5 metres (16 ft) wide now, they probably represent a collapsed stone wall some 2 metres (6.6 ft) thick and over a metre high, with perhaps a 10 metres (33 ft) diameter. A conical roof would have stood on this, rising to an impressive 8 metres (26 ft) or more in height, to make a large communal living space. It is listed as 'Hut Circle West of Buarth Cyttir'. Prehistoric
Iron Age
Caerhoslligwy Enclosed Hut Groups Enclosed hut circle Llaneugrad 53°20′29″N 4°16′11″W / 53.3413°N 4.2696°W / 53.3413; -4.2696 (Caerhoslligwy Enclosed Hut Groups),
Two related sites, 200 metres apart, with evidence of Iron Age (or Roman period) hut circles. The more southerly site has a walled enclosure, and at least three buildings. Growth of trees and scrub, along with dumping of quarried material has obscured what detail there was for most of the huts. Prehistoric
(Iron Age)
Bwlch Hut Group, Benllech Enclosed hut circle Llanfair-Mathafarn-Eithaf 53°18′39″N 4°14′05″W / 53.3107°N 4.2348°W / 53.3107; -4.2348 (Hut Group S of Bwlch, Benllech),
Variously described as a roundhouse settlement near Coed y Bwlch, Bryn Engan and Coed y Glyn, two hut circles stand on the edge of a strip of woodland southwest of Benllech. Impressive orthostats of 2 metres (6.6 ft) thick rubble-filled walls suggest huts with an internal diameter of over 9 metres (30 ft). A nearby boundary wall and rectangular building may be an enclosure wall from the same Iron Age or Romano-British period. Prehistoric
(Iron Age)
Pant-y-Saer Hut Circles Enclosed hut circle Llanfair-Mathafarn-Eithaf 53°19′04″N 4°14′01″W / 53.3179°N 4.2336°W / 53.3179; -4.2336 (Pant-y-Saer Hut Circles),
Stone remains of two roundhouses and two ancillary rectangular buildings, within a drystone walled oval enclosure 38 metres (125 ft) across. The smaller hut has interesting stone platforms around the sides, identified as sleeping places. The site was excavated in 1931 and 1933, with numerous Iron Age and Romano-British finds, plus a 6th-century penannular brooch suggesting a continued occupation into early Medieval times. Prehistoric
(Iron Age)
Penmon Deer Park Hut Groups & Terraces Enclosed hut circle Llangoed 53°18′29″N 4°03′41″W / 53.3081°N 4.0613°W / 53.3081; -4.0613 (Penmon Deer Park Hut Groups & Terraces),
Several Iron Age enclosure earthworks, each with one or more roundhouses. Part of a wider landscape of Iron Age fields. Prehistoric
(Iron Age)
  Graiglas Barrow Round barrow Llangristiolus 53°14′50″N 4°22′35″W / 53.2472°N 4.3765°W / 53.2472; -4.3765 (Graiglas Barrow),
Burial mound (also known as Craig Las), 9 metres (30 ft) across and 1.2 metres (3.9 ft) high, beside a minor road, on a low ridge near the Mona industrial estate. A fallen standing stone is close by to the north (not scheduled). Prehistoric
(Bronze Age)
  Tyddyn Sadler Hut Group Enclosed hut circle Llangristiolus 53°14′12″N 4°22′56″W / 53.2367°N 4.3822°W / 53.2367; -4.3822 (Tyddyn Sadler Hut Group),
Several square and round huts grouped amongst a network of field systems, and probably dating to Iron Age or Roman period. The wider area was noted in 1871 for its hut circles and embankments, but this particular group was first identified and documented in 1977. Prehistoric
  Castell Bryn Gwyn   Henge & enclosure Llanidan 53°10′42″N 4°17′52″W / 53.1784°N 4.2979°W / 53.1784; -4.2979 (Castell Bryn-Gwyn),
Revetted stone walls surround a level area some 54 metres in diameter. An earlier bank and ditch belong to a henge from the end of the Neolithic period. During the Iron Age the present wall was built, and it was refortified in Roman times and later. Prehistoric
  Pont Sarn-Las Hut Group Unenclosed hut circle Llanidan 53°11′09″N 4°17′21″W / 53.1859°N 4.2891°W / 53.1859; -4.2891 (Pont Sarn-Las Hut Group),
Circles in the field, with evidence of surviving stonework. Roman coins and other finds were reported in the 18th and 19th centuries, along with the suggestion that it was part of a large pre-Roman settlement of Trefwri, perhaps extending to Caer Leb (AN014) 500m to the south. Prehistoric
  Brynsiencyn Round Barrow Round barrow Llanidan 53°10′42″N 4°15′49″W / 53.1783°N 4.2637°W / 53.1783; -4.2637 (Round Barrow East of Brynsiencyn),
Large unexcavated round barrow on a gentle slope, east of Brynsiencyn. Also known as 'Round barrow west of Carn or Garn'. Prehistoric
(Bronze Age)
Cors-y-Bol Round Barrow Round barrow Llannerch-y-medd 53°19′52″N 4°26′29″W / 53.331°N 4.4414°W / 53.331; -4.4414 (Cors-y-Bol Round Barrow),
Possible ring cairn, barrow, or perhaps enclosure, it was noticed by a farmer in 1956, on the edge of a bog which drains into Llyn Alaw. Also referred to as 'Cor y Bal'. Prehistoric
Llifad, Carreglefn Enclosure Mechell 53°23′30″N 4°25′49″W / 53.3916°N 4.4302°W / 53.3916; -4.4302 (Llifad, Carreglefn),
A later prehistoric pentagonal enclosure, 49 yards (45m) across. It is a possible defended settlement and stands a few hundred metres south of Pen-y-Morwydd Barrow. Prehistoric
Pen-y-Morwyd Round Barrow Round barrow Mechell 53°23′36″N 4°25′50″W / 53.3934°N 4.4306°W / 53.3934; -4.4306 (Pen-y-Morwyd Round Barrow),
Prominent burial mound on a hill-top between Llanfechell and Bodewryd. It is 25 metres (82 ft) across, and 2 metres (6.6 ft) high, crossed by a modern wall. A footpath from Rhosbeirio crosses the mound. Prehistoric
Bronze Age
Bwlch-y-Dafarn Hut Group Enclosed hut circle Moelfre 53°20′47″N 4°15′55″W / 53.3463°N 4.2654°W / 53.3463; -4.2654 (Bwlch-y-Dafarn Enclosed Hut Group),
Roughly rectangular walled enclosure. Within it a well defined roundhouse, 6m across with paved floor, had Roman pottery finds. There are also two large rectangular buildings. Prehistoric
Glan'r Afon Hut Circle Unenclosed hut circle Moelfre 53°20′41″N 4°15′13″W / 53.3448°N 4.2536°W / 53.3448; -4.2536 (Hut Group N of Glan'r Afon),
Hut circle of 8m diameter with rubble-filled 1.3m thick walls, up to 0.8m high. Now in thick woodland, rectangular buildings alongside have also been recorded. Prehistoric
  Marian-glas Hut Group Unenclosed hut circle Moelfre 53°20′16″N 4°15′06″W / 53.3379°N 4.2516°W / 53.3379; -4.2516 (Marian-glas Hut Group),
A roundhouse settlement, also called Cae Marh, with several huts with thick walls, some standing up to 1.4m high. Some of the hut walls are now obscured by a thicket, while others are visible as wall lines in the lawns of Marianglas caravan park. A sign by the Ministry of Public Building and Works (1962–70) indicates the location. Prehistoric
Parc Salmon Hut Group Unenclosed hut circle Moelfre 53°21′03″N 4°15′19″W / 53.3509°N 4.2552°W / 53.3509; -4.2552 (Parc Salmon Hut Group),
Circular hut and a nearby mound of discarded shellfish, with pottery and other items including half of a bronze ring. The hut had flooring of cobbles set in the earth, and a mortar stone set into the floor. Prehistoric
(Iron Age & Roman)
  Pen-y-Fynwent Barrow Round barrow Rhosybol 53°22′26″N 4°21′18″W / 53.374°N 4.3551°W / 53.374; -4.3551 (Pen-y-Fynwent Barrow),
A low burial mound, some 22 metres (72 ft) across and 1m high, and thought to be Bronze Age. It is in the same field as the Medieval Pen-y-Fynwent Enclosure (AN124). Prehistoric
Hut Circle Settlement at Capel Llochwydd Enclosed hut circle and Chapel site Trearddur 53°18′44″N 4°40′52″W / 53.3121°N 4.6812°W / 53.3121; -4.6812 (Enclosed Hut Circle Settlement at Capel Llochwydd),
Multi-period site, on the cliff top near South Stack on Holy Island. The walls of a ruined Medieval chapel are cut into the enclosure walls and hut circles of an Iron Age settlement. The Bronze Age burial mound of Gosgarth Bay round cairn (AN147) is a few yards up the slope. The site was, until the 1770s, the setting for local festival day gatherings, when young people would attempt 'matrimonial divining'[73] Prehistoric
& Medieval
Gogarth Bay round cairn Round cairn Trearddur 53°18′42″N 4°40′56″W / 53.3116°N 4.6823°W / 53.3116; -4.6823 (Gogarth Bay round cairn),
Round cairn on the summit of a coastal ridge known as Garn, close to the Llochwydd chapel and hut site at AN133. The large low mound of stones is a Bronze Age burial cairn, with dramatic views of the coast and area. Prehistoric
(Bronze Age)
  Holyhead Mountain Hut Circles   Hut circle settlement Trearddur 53°18′19″N 4°41′02″W / 53.3054°N 4.6838°W / 53.3054; -4.6838 (Holyhead Mountain Hut Circles),
This collection of over 20 impressive unenclosed circular stone huts (named as 'Cytiau'r Gwyddelod' on OS maps) at Ty Mawr, near South Stack, has been in the care of the state since 1911. Some 50 hut sites were noted by W O Stanley in 1862, many of which are no longer visible. The site is now within the South Stack Cliffs RSPB reserve. Evidence for occupation from the Mesolithic through to Early Medieval periods has been found, but the main standing remains are from the Iron Age. Prehistoric
(Iron Age)
Plas Meilw Hut Circles Unenclosed hut circle Trearddur 53°17′44″N 4°39′26″W / 53.2956°N 4.6573°W / 53.2956; -4.6573 (Plas Meilw Hut Circles),
Collection of Iron Age huts, of which two now remain as visible circles. They were excavated in 1868 by William Owen Stanley who identified 12 round huts and two rectangular buildings. A fireplace, stone flooring, quernstones, a variety of hammers, pounders, grinding stones, spindlewhorls, whetstones and pottery were found along with possible evidence of copper smelting. By 2013 the site was overgrown with brambles and gorse. Prehistoric
(Iron Age)
  Porth Dafarch Hut Circles Round barrows and Settlement Trearddur 53°17′18″N 4°39′02″W / 53.2882°N 4.6505°W / 53.2882; -4.6505 (Porth Dafarch Hut Circles),
Complex coastal site with two Bronze Age burial mounds overlaid by Romano-British hut circles that had become buried by wind-blown sand. These were investigated by William Owen Stanley in 1878, with further excavations by B. H. St. John O'Neill of the Ministry of Works prior to road-widening in 1939 which then obliterated some of the settlement. The hut group comprised at least two circular huts with low stone walls and a central post-hole, with hearths suggesting several different phases of occupation. A selection of 2nd to 4th century finds included sherds of Samian ware pottery, a glass bead, a later Iron Age bronze tankard handle, a collection of stone objects including spindle whorls and rotary querns, a pennanular brooch and a carnelian intaglio. The finds are now held by National Museum Wales. Prehistoric
(Bronze Age and Romano-British)
Tre-Arddur Hut Group Enclosed hut circle Trearddur 53°17′15″N 4°36′28″W / 53.2874°N 4.6079°W / 53.2874; -4.6079 (Tre-Arddur Hut Group),
Identified in 1959 as a group of three circular hut foundations, the site has not had any excavations. It is now mostly obscured by gorse thickets within the Trearddur Bay Caravan Park. It dates to the 1st century BC and its location on an east-facing knoll overlooking the channel between Holy Island and Anglesey, suggests a link with a similar hut group on the far bank of the channel on the Ynys Leurad peninsular (AN035) in Valley Community, perhaps indicating the two sides of a ferry route. Prehistoric
(Iron Age)
  Bedd Branwen Round Cairn Round barrow Tref Alaw 53°20′11″N 4°27′46″W / 53.3363°N 4.4628°W / 53.3363; -4.4628 (Bedd Branwen Round Cairn),
Bronze Age cairn beside the River Alaw. An excavation of 1813 found a cremation urn, and linked the site to the burial of Branwen. The cairn has a central pillar dated to before 2000BC, and the mound raised around it soon after 1400BC. Up to 12 cremated burial urns have been identified in an excavation of 1966. Prehistoric
(Bronze Age)
Ynys Leurad Hut Circles Hut circle settlement Valley 53°16′48″N 4°35′09″W / 53.2799°N 4.5858°W / 53.2799; -4.5858 (Ynys Leurad Hut Circles),
(Iron Age)
  Tywyn-y-Parc Promontory Fort Promontory Fort - coastal Bodorgan 53°09′24″N 4°26′29″W / 53.1568°N 4.4414°W / 53.1568; -4.4414 (Tywyn-y-Parc Promontory Fort),
The fort is defined by a substantial bank running across the neck of the promentary with a possible gate at the northern edge. 70m long, 8m wide and 2.5m high, it forms a substantial barrier, and has two shorter sections of outer walls which overlap slightly. Prehistoric
  Y Werthyr Hillfort Hillfort Bryngwran 53°16′33″N 4°26′21″W / 53.2758°N 4.4391°W / 53.2758; -4.4391 (Y Werthyr Hillfort),
Oval earthwork bank, 200m across, crossed through its western edge by the B5112 2 km NW of Gwalchmai in central Anglesey, Wales. Iron Age defensive double banked hillfort on a low hilltop, now quite faint on the ground, but the outline of which is retained in a hedge line west of the road. Prehistoric
(Iron Age)
  Dinas Gynfor Hillfort Hillfort Llanbadrig 53°25′39″N 4°25′25″W / 53.4274°N 4.4236°W / 53.4274; -4.4236 (Dinas Gynfor Hillfort),
  Din Sylwy Hillfort Llanddona 53°18′39″N 4°07′22″W / 53.3108°N 4.1229°W / 53.3108; -4.1229 (Din Sylwy),
Also called Bwrdd Arthur, the earthworks enclose a relatively flat, partly overgrown area, 600 yards from the Irish Sea. Two entrances have been detected. Prehistoric
Castell near Tre-Fadog Promontory Fort - coastal Llanfaethlu 53°20′32″N 4°34′07″W / 53.3423°N 4.5686°W / 53.3423; -4.5686 (Castell Near Tre-Fadog),
Caer Idris Hillfort Hillfort Llanidan 53°11′15″N 4°15′17″W / 53.1874°N 4.2546°W / 53.1874; -4.2546 (Caer Idris Hillfort),
Dinas Cadnant Hillfort Hillfort Menai Bridge 53°14′16″N 4°10′16″W / 53.2377°N 4.1712°W / 53.2377; -4.1712 (Dinas Cadnant Hillfort),
Coed Newydd Boiling Mounds & Smelting Hearth Burnt mound Moelfre 53°20′51″N 4°16′17″W / 53.3475°N 4.2715°W / 53.3475; -4.2715 (Coed Newydd Boiling Mounds & Smelting Hearth),
  Din Lligwy Hut Group   Enclosed hut circle Moelfre 53°21′03″N 4°15′33″W / 53.3508°N 4.2592°W / 53.3508; -4.2592 (Din Lligwy Ancient Village),
Stone foundation walls of a group of Iron Age houses and workshops, surrounded by an enclosing wall. Prehistoric
  Caer y Tŵr   Hillfort Trearddur 53°18′47″N 4°40′29″W / 53.3131°N 4.6747°W / 53.3131; -4.6747 (Caer y Twr),
A Roman-era hillfort on the summit of the Holyhead Mountain. Now mostly rubble, but its walls can still be made out, including a large stone rampart on the north and east sides. Prehistoric
Dinas Porth Ruffydd Hillfort Trearddur 53°16′55″N 4°40′02″W / 53.2819°N 4.6673°W / 53.2819; -4.6673 (Dinas Porth Ruffydd),
Y Werthyr Hillfort Hillfort Tref Alaw 53°19′49″N 4°27′34″W / 53.3303°N 4.4594°W / 53.3303; -4.4594 (Y Werthyr HIllfort),
Bivallate hillfort on an imposing hill top. Ramparts are now mostly ploughed out. Prehistoric
Capel Eithin (site of) and Cemetery Chapel Llanfihangel Ysgeifiog 53°13′45″N 4°15′48″W / 53.2293°N 4.2634°W / 53.2293; -4.2634 (Capel Eithin (site of) and Cemetery),
Bryn Eryr Rectangular Earthwork Enclosure Cwm Cadnant 53°15′28″N 4°11′21″W / 53.2578°N 4.1892°W / 53.2578; -4.1892 (Bryn Eryr Rectangular Earthwork),
Hendrefor Earthwork Enclosure Cwm Cadnant 53°15′56″N 4°10′57″W / 53.2655°N 4.1825°W / 53.2655; -4.1825 (Hendrefor Earthwork),
  Caer Gybi Roman Fortlet Fort Holyhead 53°18′42″N 4°37′55″W / 53.3116°N 4.632°W / 53.3116; -4.632 (Caer Gybi Roman Fortlet),
Small fortlet at the centre of Holyhead. Possibly a late-4th-century outpost for Segontium, to defend Anglesey from Irish sea-raiders Roman
  Parciau hill fort Hillfort Llaneugrad 53°20′15″N 4°15′46″W / 53.3374°N 4.2627°W / 53.3374; -4.2627 (Parciau Hillfort),
  Caer Lêb   Enclosure Llanidan 53°10′55″N 4°17′12″W / 53.1819°N 4.2866°W / 53.1819; -4.2866 (Caer Leb),
Bodafon Mountain Hut Groups Enclosed hut circle Moelfre 53°20′22″N 4°17′54″W / 53.3394°N 4.2983°W / 53.3394; -4.2983 (Bodafon Mountain Hut Groups),
Pen-Sieri Inscribed Stone Inscribed stone Aberffraw 53°12′25″N 4°29′42″W / 53.2069°N 4.4951°W / 53.2069; -4.4951 (Pen-Sieri Inscribed Stone),
Early Christian memorial stones with the words 'MAILIS' [=(stone of Mail)], plus some Ogham text, suggesting 5th or 6th century date. In 1802 it was in use as a barn lintel. In 2002 it was relocated inside a farm building at Trecastell Farm. Early Medieval
Bodedern Early Christian Cemetery Cemetery Bodedern 53°17′26″N 4°29′23″W / 53.2906°N 4.4898°W / 53.2906; -4.4898 (Bodedern Early Christian Cemetery),
Early Medieval
  Bodfeddan Inscribed Stone Inscribed stone Llanfaelog 53°14′34″N 4°27′54″W / 53.2429°N 4.465°W / 53.2429; -4.465 (Bodfeddan Inscribed Stone),
Standing Stone 2m high, alongside the A4080 1 km north of Pencarnisiog. Inscribed on Northern face is the text CVNOGVS_HIC IACIT (the Stone of Cunogus(s)us He lies here). The text is dated to the 5th or 6th century AD, but a well-defined cup mark may indicate the stone is a prehistoric item. Early Medieval
Penmon Cross   Cross Llangoed 53°18′21″N 4°03′24″W / 53.3058°N 4.0568°W / 53.3058; -4.0568 (Cross in Penmon Priory),
Early Medieval
  St Seiriol's Well, Penmon   Holy Well Llangoed 53°18′23″N 4°03′24″W / 53.3064°N 4.0566°W / 53.3064; -4.0566 (St Seiriol's Well, Penmon),
Early Medieval
  Monastic Settlement on Puffin Island Monastic settlement Llangoed 53°19′09″N 4°01′31″W / 53.3193°N 4.0253°W / 53.3193; -4.0253 (Tower & Remains of Church and Monastic Settlement on Puffin Island),
Early Medieval
  Mynwent y Llwyn Chapel? Llangristiolus 53°13′57″N 4°18′36″W / 53.2325°N 4.31°W / 53.2325; -4.31 (Mynwent y Llwyn),
Broad mound on Malltraeth marsh, beside the old A5. It has long been suggested, and doubted, as the site of a chapel, however a resistivity survey in 1970 found the foundations of a rectangular building. The name means 'the burial ground of the grove' Early Medieval?
  Llangaffo inscribed stones Cross shaft Rhosyr 53°11′28″N 4°19′40″W / 53.1911°N 4.3277°W / 53.1911; -4.3277 (Early Gravestones & Shaft in Churchyard),
In the churchyard of St Caffo's Church, Llangaffo, there is a part of a 9th-century stone cross, and inscribed gravestones from the 9th to 11th centuries Early Medieval
  Beaumaris Castle     Castle Beaumaris 53°15′54″N 4°05′23″W / 53.2649°N 4.0897°W / 53.2649; -4.0897 (Beaumaris Castle),
One of the most famous castles of Edward I. Part of the Castles and Town Walls of Gwynedd World Heritage site Medieval

Beaumaris Town Wall Town Wall Beaumaris 53°15′53″N 4°05′39″W / 53.2647°N 4.0941°W / 53.2647; -4.0941 (Beaumaris Town Wall),
Llanfaes Friary Friary Beaumaris 53°16′29″N 4°05′14″W / 53.2746°N 4.0871°W / 53.2746; -4.0871 (Site of Friary at Llanfaes),
  Hafoty Medieval House   House (domestic) Cwm Cadnant 53°16′51″N 4°09′28″W / 53.2809°N 4.1579°W / 53.2809; -4.1579 (Hafoty Old Farm House),
Castell Crwn Ringwork Cylch-y-Garn 53°23′16″N 4°30′35″W / 53.3879°N 4.5098°W / 53.3879; -4.5098 (Castell Crwn),
  St Michael's Church, Llanfihangel Ysgeifiog Church Llanfihangel Ysgeifiog 53°14′10″N 4°16′51″W / 53.236°N 4.2809°W / 53.236; -4.2809 (Old Parish Church & Churchyard),
Plas Berw House (domestic) Llanfihangel Ysgeifiog 53°13′14″N 4°17′57″W / 53.2206°N 4.2993°W / 53.2206; -4.2993 (Plas Berw),
Tre-Garnedd Moated Site Moated Site Llangefni 53°14′48″N 4°17′47″W / 53.2466°N 4.2964°W / 53.2466; -4.2964 (Tre-Garnedd Moated Site),
Aberlleiniog Castle Motte Llangoed 53°17′33″N 4°04′38″W / 53.2926°N 4.0772°W / 53.2926; -4.0772 (Aberlleiniog Castle),
Civil War stone fortifications on a medieval motte Medieval
  Penmon Priory   Priory Llangoed 53°18′20″N 4°03′24″W / 53.3055°N 4.0568°W / 53.3055; -4.0568 (Penmon Priory),
Early medieval religious foundation that was an Augustinian Priory by 1237 Medieval
  Old Church of St Nidan, Llanidan Church Llanidan 53°10′40″N 4°15′13″W / 53.1779°N 4.2535°W / 53.1779; -4.2535 (Old Parish Church),
  Capel Lligwy   Chapel Moelfre 53°21′08″N 4°15′23″W / 53.3523°N 4.2564°W / 53.3523; -4.2564 (Capel Lligwy),
12th century ruined chapel with a 16th-century side chapel with a vault beneath. At some point it became a private place of worship for a nearby house, then later fell into disrepair and now has no roof, but stands as a picturesque ruin. Medieval
Ffynnon Allgo (St Allgo's Well) Holy Well Moelfre 53°20′19″N 4°15′21″W / 53.3385°N 4.2559°W / 53.3385; -4.2559 (Ffynnon Allgo),
  Traeth Lligwy Fish Weir Fish weir Moelfre 53°21′38″N 4°15′20″W / 53.3606°N 4.2555°W / 53.3606; -4.2555 (Traeth Lligwy Fish Weir),
Fish trap built as a crescent of rocks near the low-tide mark of Lligwy Bay, near Moelfre, Anglesey. It is of uncertain date, is covered at high-tide, and was used to trap fish in the pond it creates at low-tide. Medieval
  St Gwenfaen's Well Holy Well Rhoscolyn 53°14′50″N 4°36′36″W / 53.2473°N 4.6101°W / 53.2473; -4.6101 (Ffynnon Gwenfaen),
An early medieval holy well in the south west of Holy Island, named after St Gwenfaen, whose cloister was nearby. Also known as Welsh: Ffynnon Gwenfaen. Medieval
Pen-y-Fynwent Enclosure Enclosure Rhosybol 53°22′24″N 4°21′22″W / 53.3732°N 4.356°W / 53.3732; -4.356 (Pen-y-Fynwent Enclosure),
Medieval or pre-medieval homestead enclosure, and suggested site of a chapel. The enclosure survives as a low bank. No trace now remains of the chapel, which 19th century sources named variously as Bettws Bwchwdw, Capel Tegeryn, and a Church dedicated to St Morwenna. A Bronze Age Mound (AN125) is in the same field. Medieval
  Llys Rhosyr Manor Rhosyr 53°09′43″N 4°21′58″W / 53.162°N 4.3661°W / 53.162; -4.3661 (Llys Rhosyr),
Thirteenth century llys, a court of the princes of Gwynedd, excavated in 1993. It went out of use during the 14th century when the nearby 'new borough' was founded, and the llys was buried by the dunes. Medieval
(13th century)
  St Dwynwen's Church Church Rhosyr 53°08′14″N 4°24′48″W / 53.1373°N 4.4132°W / 53.1373; -4.4132 (St Dwynwen's Church),
  Pont Aberffraw Bridge Aberffraw 53°11′32″N 4°27′45″W / 53.1921°N 4.4625°W / 53.1921; -4.4625 (Pont Aberffraw),
Bridge over the Afon Ffraw at Aberffraw, built by Sir A. Owen in 1731. A walled causeway continues to the east over the large expanse of sand dunes of Tywyn Aberffraw. The bridge is now only open to pedestrians. Post-Medieval /Modern AN101
  Parys Mountain Tower Amlwch 53°23′11″N 4°20′41″W / 53.3865°N 4.3448°W / 53.3865; -4.3448 (Parys Mountain: Windmill, Engine House, Precipitation Pits and Great Opencast),
Windmill, Engine House, Precipitation Pits and Great Opencast Post-Medieval /Modern AN111
Gorad Friars Bach Fish Weir Fish weir Beaumaris 53°16′41″N 4°04′43″W / 53.2781°N 4.0787°W / 53.2781; -4.0787 (Gorad Friars Bach Fish Weir),
Post-Medieval /Modern AN140
  Llanddona Fish Weir Fish weir Llanddona 53°18′29″N 4°08′38″W / 53.3081°N 4.1439°W / 53.3081; -4.1439 (Llanddona Fish Weir),
A post medieval intertidal fish trap at the eastern end of the beach at Red Wharf Bay near Llanddona. Post-Medieval /Modern AN137
Parciau Dovecot Dovecote Llaneugrad 53°19′51″N 4°15′27″W / 53.3309°N 4.2576°W / 53.3309; -4.2576 (Parciau Dovecot),
Post-Medieval /Modern AN036
Coed Mor Fish Weir Fish weir Llanfair Pwllgwyngyll 53°13′08″N 4°11′03″W / 53.2188°N 4.1841°W / 53.2188; -4.1841 (Coed Mor Fish Weir),
Post-Medieval /Modern AN138
Gorad Ddu Fish Weir Fish weir Llanfair Pwllgwyngyll 53°13′17″N 4°10′47″W / 53.2214°N 4.1797°W / 53.2214; -4.1797 (Gorad Ddu Fish Weir),
Post-Medieval /Modern AN139
North Weir and Smoke Tower, Ynys Gorad Goch Fish weir Llanfair Pwllgwyngyll 53°13′07″N 4°10′53″W / 53.2187°N 4.1813°W / 53.2187; -4.1813 (North Weir and Smoke Tower, Ynys Gorad Goch),
Post-Medieval /Modern AN096
Felin Carnau Tide Mill Tidemill Llanfair-yn-Neubwll 53°15′15″N 4°33′05″W / 53.2541°N 4.5514°W / 53.2541; -4.5514 (Felin Carnau Tide Mill),
Post-Medieval /Modern AN131
Felin Wen Tide Mill Tidemill Llanfair-yn-Neubwll 53°15′52″N 4°33′23″W / 53.2644°N 4.5565°W / 53.2644; -4.5565 (Felin Wen Tide Mill),
Post-Medieval /Modern AN130
Aberlleiniog Fish Weir I Fish weir Llangoed 53°17′25″N 4°04′02″W / 53.2902°N 4.0672°W / 53.2902; -4.0672 (Aberlleiniog Fish Weir I),
Post-Medieval /Modern AN142
Aberlleiniog Fish Weir II Fish weir Llangoed 53°17′28″N 4°03′46″W / 53.2911°N 4.0628°W / 53.2911; -4.0628 (Aberlleiniog Fish Weir II),
Post-Medieval /Modern AN143
  Penmon Dovecote   Dovecote Llangoed 53°18′20″N 4°03′21″W / 53.3056°N 4.0557°W / 53.3056; -4.0557 (Penmon Dovecot),
Post-Medieval /Modern AN061
Trecastell Fish Weir Fish weir Llangoed 53°17′10″N 4°04′12″W / 53.2862°N 4.07°W / 53.2862; -4.07 (Trecastell Fish Weir),
Post-Medieval /Modern AN141
Bodafon Mountain Early Medieval Homestead Settlement Moelfre 53°20′13″N 4°17′51″W / 53.3369°N 4.2976°W / 53.3369; -4.2976 (Bodafon Mountain Early Medieval Homestead),
Post-Medieval /Modern AN039
Bodior Tide Mill Tidemill Rhoscolyn 53°15′38″N 4°34′07″W / 53.2605°N 4.5685°W / 53.2605; -4.5685 (Bodior Tide Mill),
Post-Medieval /Modern AN132
Hendai Medieval Farmstead Farmstead Rhosyr 53°08′49″N 4°23′11″W / 53.1469°N 4.3864°W / 53.1469; -4.3864 (Hendai Medieval Farmstead),
Post-Medieval /Modern AN108
Newlands Fish Weir Fish weir Valley 53°17′44″N 4°33′53″W / 53.2955°N 4.5646°W / 53.2955; -4.5646 (Newlands Fish Weir),
Post-Medieval /Modern AN145
Dyffryn Adda Copper Furnace and Precipitation Ponds Copper mine Amlwch 53°23′46″N 4°21′02″W / 53.396°N 4.3506°W / 53.396; -4.3506 (Dyffryn Adda Copper Furnace and Precipitation Ponds),
Post-Medieval /Modern AN135
  Mona Mine Copper mine Amlwch 53°23′14″N 4°20′15″W / 53.3872°N 4.3375°W / 53.3872; -4.3375 (Mona Mine Kilns and Sublimation Chambers, Mynydd Parys),
Kilns and Sublimation Chambers at Mona Mine, Mynydd Parys Post-Medieval /Modern AN136
  Porth Wen Brickworks Brickworks Llanbadrig 53°25′26″N 4°24′23″W / 53.424°N 4.4065°W / 53.424; -4.4065 (Porth Wen Brickworks),
A now disused Victorian brickworks which produced fire bricks. The substantial remains include a number of buildings and the remains of some of the machinery. Post-Medieval /Modern AN109
  Quay on the Stanley Embankment Quay Valley 53°17′20″N 4°34′44″W / 53.289°N 4.5789°W / 53.289; -4.5789 (The Holyhead Road: quay on the Stanley Embankment),
The Quay is the best preserved element of Thomas Telford's Stanley Embankment, the causeway between Holyhead and Anglesey. It was built in 1823 as the final link in the London to Holyhead Road. The angles of the masonry walls allowed ships to moor alongside the large unloading area. The main change in the original design is the addition of a higher parapet. Post-Medieval /Modern AN146
  Berw Colliery Colliery Llanfihangel Ysgeifiog 53°13′37″N 4°18′11″W / 53.2269°N 4.3031°W / 53.2269; -4.3031 (Berw Colliery),
Post-Medieval /Modern AN152
Scheduled monuments in Isle of Anglesey, Wales.
 =Prehistoric  =Roman  =Early Medieval
 =Medieval  =Post-Medieval/Modern
Map all coordinates using: OpenStreetMap 
Download coordinates as: KML

See alsoEdit


  1. ^ Cadw: Ancient Monuments and Scheduling. Accessed 25 April 2013
  2. ^ Cadw will send their list as a spreadsheet, or other electronic formats, on request, as indicated at This list uses information dated May 2012. The sites can also be accessed via a map-based datavbase at, accessed 14 September 2017
  3. ^ coflein NPRN: 95545. GAT PRN: 3032. Cadw Scheduled Monument Report 3256 See also Historic Wales Map , Barclodiad-y-Gawres Burial Chamber
  4. ^ coflein NPRN: 302471. GAT PRN: 2528. Cadw Scheduled Monument Report 2506 See also Historic Wales Map , Din Dryfol Burial Chamber
  5. ^ coflein NPRN: 302343. GAT PRN: 3038. Cadw Scheduled Monument Report 4176 See also Historic Wales Map , Mynydd Bach round cairn
  6. ^ coflein NPRN: 302323. GAT PRN: 3003. Cadw Scheduled Monument Report 4175 See also Historic Wales Map , Trwyn Du round cairn
  7. ^ coflein NPRN: 302471. GAT PRN: 3541. Cadw Scheduled Monument Report 4172 See also Historic Wales Map , Werthyr standing stone
  8. ^ coflein NPRN: 93832. GAT PRN: 2049. See also Historic Wales Map , Presaddfed Burial Chamber
  9. ^ coflein NPRN: 302361. GAT PRN: 2622. See also Historic Wales Map , Malltraeth Yard Standing Stone
  10. ^ coflein NPRN: 302676. GAT PRN: 2643. See also Historic Wales Map , Cremlyn Standing Stones
  11. ^ coflein NPRN: 302614. GAT PRN: 2640. See also Historic Wales Map , Hendrefor Burial Chambers
  12. ^ coflein NPRN: 302645. GAT PRN: 2176. See also Historic Wales Map , Pen-y-Maen Standing Stone
  13. ^ coflein NPRN: 302613. GAT PRN: 2175. See also Historic Wales Map , Ty-Wyn Standing Stone
  14. ^ coflein NPRN: 302613. GAT PRN: 2175. See also Historic Wales Map , Pen-yr-Orsedd Standing Stones
  15. ^ coflein NPRN: 302268. GAT PRN: 2501. See also Historic Wales Map , Ty-Mawr Standing Stone
  16. ^ coflein NPRN: 93827. GAT PRN: 2694. See also Historic Wales Map , Bryn-Celli-Ddu Burial Chamber
  17. ^ coflein NPRN: 302503. GAT PRN: 2710. See also Historic Wales Map , Bryn-Celli-Ddu Standing Stone
  18. ^ coflein NPRN: 300180. GAT PRN: 2172. See also Historic Wales Map , Bryn-yr-Hen-Bobl Burial Chamber
  19. ^ coflein NPRN: 93829. GAT PRN: 2171. See also Historic Wales Map , Plas Newydd Burial Chambers
  20. ^ coflein NPRN: 302504. GAT PRN: 2709. See also Historic Wales Map , Tyddyn-Bach Standing Stone
  21. ^ coflein NPRN: 302647. GAT PRN: 2649. See also Historic Wales Map , Llanddona Standing Stone
  22. ^ coflein NPRN: 302457. GAT PRN: 2737. See also Historic Wales Map , Hirdre-Faig Standing Stone
  23. ^ coflein NPRN: 302506. GAT PRN: 2753. See also Historic Wales Map , Llanddyfnan Standing Stone
  24. ^ coflein NPRN: 302478. GAT PRN: 2199. See also Historic Wales Map , Maen Addwyn
  25. ^ Account of Ty Newydd by J.E. Griffiths: Arch Cambrensis, Vol X, 1864
  26. ^ coflein NPRN: 93834. GAT PRN: 3030. See also Historic Wales Map , Ty-Newydd Burial Chamber
  27. ^ coflein NPRN: 302298. GAT PRN: 2021. See also Historic Wales Map , Capel Soar Standing Stone
  28. ^ coflein NPRN: 302558. GAT PRN: 2693. See also Historic Wales Map , Burial Chamber 180m NE of Pen-y-Berth
  29. ^ coflein NPRN: 302679. GAT PRN: 3610. See also Historic Wales Map , Benllech Megalith: Goosehouse
  30. ^ coflein NPRN: 300835. GAT PRN: 3602. See also Historic Wales Map , Glyn, Burial Chamber 450m N of
  31. ^ British Goblins, Wirt Sykes (1880) p.389
  32. ^ - pantysaer accessed 20 September 2014
  33. ^ coflein NPRN: 95529. GAT PRN: 3601. See also Historic Wales Map , Pant-y-Saer Burial Chamber
  34. ^ coflein NPRN: 302374. GAT PRN: 2160.See also Historic Wales Map , Henblas Burial Chamber
  35. ^ coflein NPRN: 93830. GAT PRN: 3134. See also Historic Wales Map , Bodowyr Burial Chamber
  36. ^ coflein NPRN: 302402. GAT PRN: 3135. See also Historic Wales Map , Bryngwyn Standing Stones
  37. ^ coflein NPRN: 302422. GAT PRN: 3136. See also Historic Wales Map , Perthi-Duon Burial Chamber
  38. ^ coflein NPRN: 302430. GAT PRN: 3145. See also Historic Wales Map , Trefwri Standing Stone
  39. ^ coflein NPRN: 302477. GAT PRN: 2201. See also Historic Wales Map , Llech Golman
  40. ^ coflein NPRN: 302467. GAT PRN: 3543. See also Historic Wales Map , Bodewryd Standing Stone
  41. ^ coflein NPRN: 302330. GAT PRN: 3048. See also Historic Wales Map , Standing Stone 410m North of Church
  42. ^ coflein NPRN: 302331. GAT PRN: 3047. See also Historic Wales Map , Standing Stones
  43. ^ coflein NPRN: 95532. GAT PRN: 3594. See also Historic Wales Map , Lligwy Burial Chamber
  44. ^ coflein NPRN: 275604. GAT PRN: 2125. See also Historic Wales Map , Ogof Arian Cave
  45. ^ coflein NPRN: 402228. GAT PRN: 2115. See also Historic Wales Map , Plas Bodafon, standing stone to WNW of
  46. ^ coflein NPRN: 302476. GAT PRN: 3579. See also Historic Wales Map , Carreg Leidr
  47. ^ coflein NPRN: 302472. GAT PRN: 2103. See also Historic Wales Map , Llys Einion Standing Stone
  48. ^ coflein NPRN: 302473. GAT PRN: 2104. See also Historic Wales Map , Maen Chwyf
  49. ^ coflein NPRN: 95537. GAT PRN: 2748. See also Historic Wales Map , Penrhos Feilw Standing Stones
  50. ^ coflein NPRN: 95535. GAT PRN: 2500. See also Historic Wales Map , Trefignath Burial Chamber
  51. ^ coflein NPRN: 302329. GAT PRN: 2066. See also Historic Wales Map , Glan-Alaw Standing Stone
  52. ^ coflein NPRN: 93838. GAT PRN: 2062. See also Historic Wales Map , Tregwehelydd Standing Stone
  53. ^ coflein NPRN: 302306. GAT PRN: 2520, (also GAT PRN: 1539). See also Historic Wales Map , Castellor Hut Group
  54. ^ coflein NPRN: 95594. GAT PRN: 2599. See also Historic Wales Map , Enclosed Hut Group West of Mariandyrys
  55. ^ coflein NPRN: 302685. GAT PRN: 2663. See also Historic Wales Map , Hut Circle W of Buarth Cyttir
  56. ^ coflein NPRN: 300850. GAT PRN: 2128 and GAT PRN: 2129. See also Historic Wales Map , Caerhoslligwy Enclosed Hut Groups
  57. ^ coflein NPRN: 302529. GAT PRN: 3609. See also Historic Wales Map , Hut Group S of Bwlch, Benllech
  58. ^ coflein NPRN: 93857. GAT PRN: 60. See also Historic Wales Map , Pant-y-Saer Hut Circles
  59. ^ coflein NPRN: 300853. GAT PRN: 2563. See also Historic Wales Map , Penmon Deer Park Hut Groups & Terraces
  60. ^ coflein NPRN: 302364. GAT PRN: 2150. See also Historic Wales Map , Graiglas Barrow
  61. ^ coflein NPRN: 309532. GAT PRN: 1548. See also Historic Wales Map , Tyddyn Sadler Hut Group
  62. ^ coflein NPRN: 93836. GAT PRN: 3140. See also Historic Wales Map , Castell Bryn-Gwyn
  63. ^ coflein NPRN: 93883. GAT PRN: 3138. See also Historic Wales Map , Pont Sarn-Las Hut Group
  64. ^ coflein NPRN: 58980. GAT PRN: 1550. See also Historic Wales Map , Round Barrow East of Brynsiencyn
  65. ^ coflein NPRN: 302339. GAT PRN: 2083. See also Historic Wales Map , Cors-y-Bol Round Barrow
  66. ^ coflein NPRN: 300840. GAT PRN: 3053. See also Historic Wales Map , Llifad, Carreglefn
  67. ^ coflein NPRN: 302341. GAT PRN: 3055. See also Historic Wales Map , Pen-y-Morwyd Round Barrow
  68. ^ coflein NPRN: 302483. GAT PRN: 2127. See also Historic Wales Map , Bwlch-y-Dafarn Enclosed Hut Group
  69. ^ coflein NPRN: 302510. GAT PRN: 3595. See also Historic Wales Map , Hut Group N of Glan'r Afon
  70. ^ coflein NPRN: 302509. GAT PRN: 3611. See also Historic Wales Map , Marian Glas Hut Group
  71. ^ coflein NPRN: 302484. GAT PRN: 2131. See also Historic Wales Map , Parc Salmon Hut Group
  72. ^ coflein NPRN: 302474. GAT PRN: 2101. See also Historic Wales Map , Pen-y-Fynwent Barrow
  73. ^ Blackwood's Edinburgh Magazine, 1831, Volume 29 p.163 This account describes how, 'until 60 years ago', a hopeful lad or lass would descend down to a holy well near the water's edge, get a mouthful of well-water and two handfuls of sand, and attempt to get back to the chapel on the cliff-top, with the sand and water intact. Success in this was said to pressage being married within the year. The practice was suppressed by Revd Ellis, who also reduced the remote chapel to rubble.
  74. ^ coflein NPRN: 275609. GAT PRN: 1753. See also Historic Wales Map , Enclosed Hut Circle Settlement at Capel Llochwydd
  75. ^ coflein NPRN: 403437. GAT PRN: 3804. See also Historic Wales Map , Gogarth Bay round cairn
  76. ^ coflein NPRN: 308078. GAT PRN: 1755. See also Historic Wales Map , Holyhead Mountain Hut Circles
  77. ^ coflein NPRN: 302258. GAT PRN: 2752. See also Historic Wales Map , Plas Meilw Hut Circles
  78. ^ coflein NPRN: 56021. GAT PRN: 2754. See also Historic Wales Map , Porth Dafarch Hut Circles
  79. ^ coflein NPRN: 275603. GAT PRN: 2003. See also Historic Wales Map , Tre-Arddur Hut Group
  80. ^ coflein NPRN: 302327. GAT PRN: 2088. See also Historic Wales Map , Bedd Branwen Round Cairn
  81. ^ coflein NPRN: 302274. GAT PRN: 2000. See also Historic Wales Map , Ynys Leurad Hut Circles
  82. ^ coflein NPRN: 93864. GAT PRN: 3024. See also Historic Wales Map , Tywyn-y-Parc Promontory Fort
  83. ^ coflein NPRN: 95549. GAT PRN: 3505. See also Historic Wales Map , Y Werthyr Hillfort
  84. ^ coflein NPRN: 95547. GAT PRN: 3067. See also Historic Wales Map , Dinas Gynfor Hillfort
  85. ^ coflein NPRN: 93842. GAT PRN: 2595. See also Historic Wales Map , Din Sylwy
  86. ^ coflein NPRN: 95571. GAT PRN: 1. See also Historic Wales Map , Castell Near Tre-Fadog
  87. ^ coflein NPRN: 58125. GAT PRN: 1561. See also Historic Wales Map , Caer Idris Hillfort
  88. ^ coflein NPRN: 95551. GAT PRN: 1562. See also Historic Wales Map , Dinas Cadnant Hillfort
  89. ^ coflein NPRN: 406616. GAT PRN: 2117. See also Historic Wales Map , Coed Newydd Boiling Mounds & Smelting Hearth
  90. ^ coflein NPRN: 95541. GAT PRN: 2132. See also Historic Wales Map , Din Lligwy Ancient Village
  91. ^ coflein NPRN: 93839. GAT PRN: 1760. See also Historic Wales Map , Caer y Twr
  92. ^ coflein NPRN: 308070. GAT PRN: 807. See also Historic Wales Map , Dinas Porth Ruffydd
  93. ^ coflein NPRN: 302328. GAT PRN: 2077. See also Historic Wales Map , Y Werthyr HIllfort
  94. ^ coflein NPRN: 43559. GAT PRN: 2730. See also Historic Wales Map , Capel Eithin (site of) and Cemetery
  95. ^ coflein NPRN: 95582. GAT PRN: 401. See also Historic Wales Map , Capel Eithin (site of) and Cemetery
  96. ^ coflein NPRN: 95566. GAT PRN: 400. See also Historic Wales Map , Hendrefor Earthwork
  97. ^ coflein NPRN: 15607. GAT PRN: 1762. See also Historic Wales Map , Roman Wall Surrounding St Cybi's Churchyard
  98. ^ coflein NPRN: 95548. GAT PRN: 2203. See also Historic Wales Map , Parciau Hillfort
  99. ^ coflein NPRN: 95536. GAT PRN: 3137. See also Historic Wales Map , Caer Leb
  100. ^ coflein NPRN: 302466, coflein NPRN: 400740, coflein NPRN: 400746, and coflein NPRN: 400747. GAT PRN: 1552 and GAT PRN: 5524. See also Historic Wales Map , Bodafon Mountain Hut Groups
  101. ^ coflein NPRN: 407619. GAT PRN: 3033. Cadw Scheduled Monument Report 3264 See also Historic Wales Map , Pen-Sieri Inscribed Stone
  102. ^ coflein NPRN: 43589. GAT PRN: 2063. See also Historic Wales Map , Bodedern Early Christian Cemetery
  103. ^ coflein NPRN: 95540. GAT PRN: 2749. See also Historic Wales Map , Bodfeddan Inscribed Stone
  104. ^ coflein NPRN: 57813. GAT PRN: 2543.See also Historic Wales Map , Cross in Penmon Priory
  105. ^ coflein NPRN: 32173. GAT PRN: 2540. See also Historic Wales Map , St Seiriol's Well, Penmon
  106. ^ coflein NPRN: 527. GAT PRN: 5017. See also Historic Wales Map , Tower & Remains of Church and Monastic Settlement on Puffin Island
  107. ^ coflein NPRN: 43592. GAT PRN: 1593. See also Historic Wales Map , Mynwent y Llwyn
  108. ^ coflein NPRN: 275602, coflein NPRN: 415196 and coflein NPRN: 415199. GAT PRN: 2607 to GAT PRN: 2617. See also Historic Wales Map , Early Gravestones & Shaft in Churchyard
  109. ^ coflein NPRN: 95769. GAT PRN: 1573. Cadw Scheduled Monument Report 3319 See also Historic Wales Map , Beaumaris Castle
  110. ^ coflein NPRN: 302768. GAT PRN: 2577. Cadw Scheduled Monument Report 2548 See also Historic Wales Map , Beaumaris Town Wall
  111. ^ coflein NPRN: 300910. GAT PRN: 2573. Cadw Scheduled Monument Report 897 See also Historic Wales Map , Site of Friary at Llanfaes
  112. ^ coflein NPRN: 15705. GAT PRN: 2650. See also Historic Wales Map , Hafoty Old Farm House
  113. ^ coflein NPRN: 95544. GAT PRN: 3515. See also Historic Wales Map , Castell Crwn
  114. ^ coflein NPRN: 43630. GAT PRN: 1583. See also Historic Wales Map , Old Parish Church & Churchyard
  115. ^ coflein NPRN: 15800. GAT PRN: 2726. See also Historic Wales Map , Plas Berw
  116. ^ coflein NPRN: 302404. GAT PRN: 2727. See also Historic Wales Map , Tre-Garnedd Moated Site
  117. ^ coflein NPRN: 58448. GAT PRN: 2570. See also Historic Wales Map , Aberlleiniog Castle
  118. ^ coflein NPRN: 95543. GAT PRN: 6621. See also Historic Wales Map , Penmon Priory
  119. ^ coflein NPRN: 43637. GAT PRN: 3151. See also Historic Wales Map , Old Parish Church
  120. ^ coflein NPRN: 11544. GAT PRN: 8104. See also Historic Wales Map , Capel Lligwy
  121. ^ coflein NPRN: 32151. GAT PRN: 2202. See also Historic Wales Map , Ffynnon Allgo
  122. ^ coflein NPRN: 406352. GAT PRN: 7228. See also Historic Wales Map , Traeth Lligwy Fish Weir
  123. ^ coflein NPRN: 32172. GAT PRN: 2004. See also Historic Wales Map , Ffynnon Gwenfaen
  124. ^ coflein NPRN: 43602. GAT PRN: 2102. See also Historic Wales Map , Pen-y-Fynwent Enclosure
  125. ^ coflein NPRN: 306904. GAT PRN: 899. See also Historic Wales Map , Llys Rhosyr
  126. ^ coflein NPRN: 27548. GAT PRN: 3026. See also Historic Wales Map , St Dwynwen's Church
  127. ^ coflein NPRN: 23722. GAT PRN: 3004. Cadw Scheduled Monument Report 2539 See also Historic Wales Map , Pont Aberffraw
  128. ^ coflein NPRN: 300166. GAT PRN: 3496 and GAT PRN: 3564. Cadw Scheduled Monument Report 252 See also Historic Wales Map , Parys Mountain: Windmill, Engine House, Precipitation Pits and Great Opencast
  129. ^ coflein NPRN: 409034. GAT PRN: 892. Cadw Scheduled Monument Report 3904 See also Historic Wales Map , Gorad Friars Bach Fish Weir
  130. ^ coflein NPRN: 406349. GAT PRN: 7204. See also Historic Wales Map , Llanddona Fish Weir
  131. ^ coflein NPRN: 31070. GAT PRN: 2200. See also Historic Wales Map , Parciau Dovecot
  132. ^ coflein NPRN: 409071. GAT PRN: 7221. See also Historic Wales Map , Coed Mor Fish Weir
  133. ^ coflein NPRN: 409032. GAT PRN: 7219. See also Historic Wales Map , Gorad Ddu Fish Weir
  134. ^ coflein NPRN: 33276. GAT PRN: 2757. See also Historic Wales Map , North Weir and Smoke Tower, Ynys Gorad Goch
  135. ^ coflein NPRN: 275607. GAT PRN: 36124. See also Historic Wales Map , Felin Carnau Tide Mill
  136. ^ coflein NPRN: 402431. GAT PRN: 7234. See also Historic Wales Map , Felin Wen Tide Mill
  137. ^ coflein NPRN: 402485. GAT PRN: 1722. See also Historic Wales Map , Aberlleiniog Fish Weir I
  138. ^ coflein NPRN: 416641. GAT PRN: 14615. See also Historic Wales Map , Aberlleiniog Fish Weir II
  139. ^ coflein NPRN: 31079. GAT PRN: 2541. See also Historic Wales Map , Penmon Dovecot
  140. ^ coflein NPRN: 301746. GAT PRN: 1723. See also Historic Wales Map , Trecastell Fish Weir
  141. ^ coflein NPRN: 15013. GAT PRN: 1551. See also Historic Wales Map , Bodafon Mountain Early Medieval Homestead
  142. ^ coflein NPRN: 275608. GAT PRN: 7159. See also Historic Wales Map , Bodior Tide Mill
  143. ^ coflein NPRN: 15016. GAT PRN: 3083. See also Historic Wales Map , Hendai Medieval Farmstead
  144. ^ coflein NPRN: 405412. GAT PRN: 7193. See also Historic Wales Map , Newlands Fish Weir
  145. ^ coflein NPRN: 91697 and coflein NPRN: 91698. GAT PRN: 6789. Cadw Scheduled Monument Report 1059 See also Historic Wales Map , Dyffryn Adda Copper Furnace and Precipitation Ponds
  146. ^ coflein NPRN: 33573 and coflein NPRN: 33664. GAT PRN: 3498 and GAT PRN: 11495. Cadw Scheduled Monument Report 3848 See also Historic Wales Map , Mona Mine Kilns and Sublimation Chambers, Mynydd Parys
  147. ^ coflein NPRN: 40736 to coflein NPRN: 40750. GAT PRN: 3562. See also Historic Wales Map , Porth Wen Brickworks
  148. ^ coflein NPRN: 402350. GAT PRN: 18291. See also Historic Wales Map , The Holyhead Road: quay on the Stanley Embankment
  149. ^ coflein NPRN: 33370. GAT PRN: 5792. See also Historic Wales Map , Berw Colliery