Plauen Castle was built around 1250 as the seat of the bailiffs of Plauen. From 1466 it served as the Electoral Saxon official seat, burned down in 1548, was rebuilt around 1670 as a secondary residence of Saxony-Zeitz , served again after 1718 as the Electoral Saxon official and court seat and from 1852 as a prison.
In April 1945, the large area was significantly destroyed by air raids, along with large parts of the old town. Cell tracts that were preserved continued to serve as a penal institution after the war and were only demolished in 2013. An archaeological excavation followed. In the future, the campus of the Plauen State Study Academy will be housed in new buildings on the premises , with the ruinous historical building fabric being preserved and partially rebuilt.
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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.