The Church of the Holy Cross is a medieval Gothic style building with a peculiar shaped tower. Construction started in the 13th century and was completed in the first half of the 15th century. The church was originally built with a round tower, however during the first half of 17th century half of the top of the tower collapsed.
There are two tombs from the 15th century and a pulpit from the 17th century inside the church.
Reference: 7is7.com
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.