The Prümerburg is a ruined hill castle on a roughly 30-metre-high lias-sandstone rock on the upper edge of the valley of the Prüm in the municipality of Prümzurlay in the county of Bitburg-Prüm in the German state of Rhineland-Palatinate.
The Prümerburg, a fief of the counts and dukes of Luxembourg, is first recorded in 1337, but was probably built in the 12th century. In the immediate vicinity there was an earlier prehistorical hillfort (Wallburgen). The castle's features include the remains of a pentagonal bergfried. The Prümerburg is believed to have burned down in 1658.
In 1337, Walter of Meysenburg is the first recorded vassal. In 1351, Godfrey of Meysenburg and his wife, Catharina of Homburg, were the enfeofees, later Prümzurlay, like Clerf, went to the lords of Brandenburg (a side line of the counts of Vianden). Subsequently there is evidence that the von Vinstingen and von Haracourt families (both by marriage) were vassals. A line of the von der Heyden family bought the Lordship of Prümerburg in the Early Modern Period, along with Niederweis and Stolzemburg.
To the northwest in the valley, the castle chapel, the Late Gothic former Chapel of St. Nicholas, has survived.
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.