![Bridgwater's Corn Exchange of 1834, 13th-century Church of St Mary with its 170 feet (52 m) slender spire and statue of Robert Blake.](http://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Bridgwater_cornexchange_staute_and_church.jpg/162px-Bridgwater_cornexchange_staute_and_church.jpg)
Sedgemoor is a local government district covering a low-lying area of land close to sea level between the Quantock and Mendip hills, historically largely marsh (or moor). It contains the bulk of the area also known as the Somerset Levels, including Europe's oldest known engineered roadway, the Sweet Track.
There are 53 Grade I listed buildings in Sedgemoor, 14 of which are in Castle Street, Bridgwater. In 1834, Castle Street was built on the site of the demolished Bridgwater Castle, as homes for the merchants trading in the town's port. Outside the town of Bridgwater, the largest concentration of Grade I listed buildings are in the village of Cannington, where the 12th-century Cannington Court and 14th-century Church of St Mary were both associated with a Benedictine nunnery. Cannington is also the site of the 13th-century Gurney Manor and Blackmoor Farmhouse, which was built around 1480 with its own chapel. Most of the Grade I listed buildings in Sedgemoor are Norman- or medieval-era churches, many of which are included in the Somerset towers, a collection of distinctive, mostly spireless Gothic church towers. Many of the more recent structures in the list are manor houses such as Halswell House, where the south range was built in the 16th-century for Sir Nicholas Halswell and the main north range in 1689 for Sir Halswell Tynte. The most recently constructed building in the list is the Corn Exchange in Bridgwater, built in 1834. (Full article...)