Thorsager round church is the only one of its kind in Jutland (and one of Denmark's seven medieval round churches). It was built of brick around 1200 and is one of Jutland's oldest brick buildings - perhaps the oldest. Its thick walls (1m) are an indication of the defensive role it played.
The church may lie on the site of a pre-Christian sacrificial place for the god Thor. The size of the church and its architecture suggeste that is was built by an important man - probably the king. During restoration work in 1877-78 most of the church's outer walls were replaced with new bricks. Original bricks can still be seen in the north wall of the choir. During the last restoration in 1950-52 the beautiful church interior was restored with amongst other things a new altar and pulpit. There is access to the upper floor by a staircase within the door of the church.
Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.