The church of Saints Peter and Paul (Petrus en Pauluskerk) was built in 1217. The single-nave Romanesque church was rebuilt several times during the next three centuries. The organs date from 1562 and pulpit from 17th century. There are also several tombs from the 16th and 17th centuries in the church. Walls were decorated with murals in the late 15th century.
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.