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Copenhagen Castle (Danish: Københavns Slot) was a castle on Slotsholmen in Copenhagen, Denmark, built in the late 14th century at the site of the current Christiansborg Palace.

Copenhagen Castle
Copenhagen Castle 1698.jpg
Copenhagen Castle painted in 1698 by unknown artist
General information
Town or cityCopenhagen
Construction startedLate 14th century


Copenhagen Castle seen on illustration from Peder Hansen Resen's Atlas Danica

During the years after the demolition of Bishop Absalon's Castle by the Hansa League in 1369, the ruins on the island were covered with earthworks, on which the new stronghold, Copenhagen Castle, was built.[1]

The castle had a curtain wall and was surrounded by a moat and with a large, solid tower as an entrance gate. The castle was still the property of the Bishop of Roskilde until King Eric of Pomerania usurped the rights to the castle in 1417. Henceforth the castle in Copenhagen was occupied by the king.

The castle was rebuilt several times. King Christian IV, for example, added a spire to the large entrance tower, which under the name of the Blue Tower gained a reputation as a prison. In the 1720s, Frederik IV entirely rebuilt the castle, but it became so heavy that the walls began to give way and to crack. It became therefore evident to Christian VI, Frederik IV's successor, immediately after his accession to the throne in 1730, that an entirely new castle had to be built.[1]

The demolition of the overextended and antiquated Copenhagen Castle was commenced in 1731 to make room for the first Christiansborg Palace.[1]


  1. ^ a b c "Ruins under Christiansborg Palace".

Coordinates: 55°40′38″N 12°34′48″E / 55.67722°N 12.58000°E / 55.67722; 12.58000