Wildenstein Castle's first mention was in 1301, with no understanding to when was it made or by whom. The two towers were built around 1350 and the construction or expansion of the palas was made around 1400. The medieval castle was restored as a Baroque residence in 1640 by Hans Thüring Effinger. The restoration work started in 2012.
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.