The oldest parts of Vansö Church were built in the end of 12th century. It was enlarged to east in the 14th century and again around 1450. The tower cap was demolished in 1765 and rebuilt 1901-1902.
The interior consists of a medieval altarpiece (1400s), crucifix (1270-1300), font (c. 1300) and two reliquaries (1400s). Vaults were decorated with murals in the 1460s.
References: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.