Stein Castle was built on a rocky promontory above Baden gorge some time before 1000. In the late 11th century the castle came to the Lenzburg family. By the early 12th Century, the cadet line that lived in the castle called themselves the Counts of Baden. In 1172, the castle was inherited by the Kyburg family. When that family died out in 1263, the castle was inherited by the Habsburgs in 1264.
The castle was occupied by a bailiff and was the seat of the Austrian administration for Vorderösterreich (Further Austria) and housed the archive. The castle was besieged and destroyed in 1415 by the Swiss Confederation. It was rebuilt in 1658-70 but was demolished in 1712. It remains in ruins since that time.
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.