Kungs-Husby Church date from the 14th century and it was enlarged between 1755-57. The medieval frescoes in walls were overpainted in the 18th century, but restored in 1859. The triumph crucifix (made in the 1200s) date probably from the elder wooden church. The limestone madonna statue was made in Rheinland around the year 1340. The Gustavian Classicism style pulpit was carved in 1789 by J. C. Krüger.
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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.