Schloss Greifenstein is a castle in the mountainous Fraconian Switzerland region of Upper Franconia, Germany. Since 1691 Greifenstein, the 'stone stronghold' of Heiligenstadt round its walls, is the seat of the noble Schenk von Stauffenberg family. Greifenstein is a prominent feature of the modern tourist itinerary called the Burgenstraße.
The Gothic castle that was first noted in 1172 was ruined and pillaged during the Peasants' war of 1524-1525 and was subsequently rebuilt. Then Marquard Sebastian von Schenk von Stauffenberg, Prince-Bishopric of Bamberg, took possession and rebuilt Greifenstein in Baroque style from 1691 to 1693, under the direction of the Bavarian architect Leonhard Dientzenhofer; consequently, as a seat of the bishop it is sometimes called Greifenstein Palais, though the aofficial bishop's palace stood (and still stands) in Bamberg.
A comprehensive restoration was carried out by Otto Philipp Schenk, Graf von Stauffenberg, in 1975–77.
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.