Rauheneck Castle is a ruined administrative castle of the Bishopric of Würzburg. According to legend, it had been built around 1180 by the Rauheneck family. They later allied with other noble families and placed their estates under the Bishopric of Würzburg. After the family's decline, the castle passed through various hands, including the Marschalks, before returning to the Bishopric. In 1829, the Barons of Rotenhan acquired the castle, but it has since fallen into decay. Recent efforts have begun to restore and preserve the castle.
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.