Saarburg Castle was one of the first and most impressive castles (Höhenburgen) in the West, built by Graf Siegfried von Luxemburg in 964. It was damaged in 1431 by troops of Ulrich von Manderscheid. Johann II von Baden rebuilt the castle later. It was conquered several times in the wars of 17th-early 18th century and finally left to decay in 1734.
The castle hill is surrounded by high fortified walls. With a depth of 60 metres, the fortress well almost reached down to the river bed of the Saar. The upper part of the tower, which offers a wonderful view of the Saar valley and the pilgrimage church of St. Mary in the Beurig district.
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.