The medieval Tumbo church is very well-preserved. It was built in a Romanesque style in the 1100s. The sacristy and porch were added in the 15th century. The original tower was collapsed in 1734 and the new one was built couple of years later.
The pulpit was made in 1630. The sandstone-made font date from the 1100s and polyptychs date also from the Middle Ages.
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.