Wallsee Castle was originally built to the site of ancient Roman camp. The current castle dates from the late 14th century and was built by Heinrich VI von Wallsee. From 1859 on it was owned by Archduchess Marie Valerie, daughter of Emperor Franz Joseph and Elisabeth, with her husband Archduke Franz Salvatore. The castle is still family owned and not for publicity available.
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.