According the legend the first wooden church of Botkyrka was completed in 1129 and it was built by Björn to his brother St. Bodvid. It was replaced by a Romanescue-style stone church in 1176. The present main nave originates from this church. The tower was added some decades later and the church was enlarged in the 14th and 15th centuries.
The altar was made in Antwerpen in 1525. The sandstone epitaph date from the 12th century. The crucifix from the 14th century is today moved to the National Historical Museum in Stockholm.
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.