Prandau-Normann Castle was remodelled in the second half of the 18th and in the first half of the 19th century, represents a core of the building complex. It consists of a cylindrical medieval tower, a Gothic chapel and a courtyard. In the frame of the restoration project of the complex, the improvement of the foundations and the chapel vaults, as well as its interior designing have been executed.
The interior design of the castle, along with the improvement of the earlier and the production of the new exterior and interior woodwork, according to the existing patterns, have followed. The interior spaces of the castle have been designed in such a way to serve the needs of the current user, the Museum of the Town of Valpovo.
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.