Alt-Signau castle was the ancestral home of the Barons of Signau. The family was first mentioned in 1130 when Werner von Signau appeared in a historical record. The castle was designed to protect and control the road between the Emmental and the Aare river. In the mid-14th century the castle was abandoned when the family moved to Neu-Signau Castle on a hill across the valley.
The ruin is relatively well preserved.
References: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.