The building now forms part of the Svendborg Museum.
Oak frames were used for the walls, and the roofs were probably thatched.
Viking ring houses, such as those at Trelleborg, near Slagelse on the Danish island of Zealand, have a rather different, ship-like shape, the long walls bulging outwards.
Hundreds of stone churches in the Romanesque style were built in the 12th and 13th centuries.
They had a flat-ceilinged nave and chancel with small rounded windows and round arches.
The architecture of Denmark has its origins in the Viking period, richly revealed by archaeological finds.
It became firmly established in the Middle Ages when first Romanesque, then Gothic churches and cathedrals sprang up throughout the country.
It was commissioned by the Danish nobleman Jens Holgersen Ulfstand who called on the services of Adam van Düren, a North German master who also worked on Lund Cathedral.
The building contains many defensive features of the times, including parapets, false doors, dead-end corridors, murder-holes for pouring boiling pitch over the attackers, moats, drawbridges and various other death traps to protect the nobles against peasant uprisings.
The flat ceilings were replaced by high cross vaults, windows were enlarged with pointed arches, chapels and towers were added and the interiors were decorated with murals. Although most Gothic architecture in Denmark is to be found in churches and monasteries, there are examples in the secular field too.
Red brick was the material of choice as can be seen in St. Glimmingehus (1499–1506), a rectangular castle in Scania, clearly presents Gothic features.
Construction of Lund Cathedral in Scania started in about 1103 when the region was part of the Kingdom of Denmark.