Stora Slågarp Church was built in Romanesque style in the late 1100s. In the late Middle Ages it was extended and had roof with cross vaults. On the ceiling of the chancel there are medieval frescoes. The tower was added in 1883. The church has a baptismal font in sandstone from the 1100s , and the pulpit from year 1776 was earlier in Lilla Slågarp church.
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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.