The first historical mention of the Persenbeug Castle dates from 970 AD when Bavarian Count of Semt and Ebersberg took possession of site and fortified it. Until 1593 it was owned by the Austrian imperial house. Then it went to the Hoyos family. The current appearance dates mainly from the 16th century. In 1800 Emperor Franz I of Austria bought the castle and the Persenbeug estate as a free private property. Today Persenbeug can be rented for events such weddings and parties.
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.