Schloßberg was a castle and Benedictine monastery hill built by the Emperor Lothar III around 1136 near Chemnitz. The monastery existed almost 400 years and was rebuilt many times. The last Gothic appearance was built between 1488 and 1522. Around the 1540 Benedictines left the site which fell to the Saxon Electors. The building was used as an administration and hunting lodge.In 1931 the new city museum was opened.
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.