The first castle at Fosteau was erected in the 14th century. In approximately 1380 Wauthier de Semousies became owner when Duchess Joan of Brabant gave it to him. His successors were the lords of Zwenne, de Marotte, de Henry and de Jamblines. They built several other buildings around the castle. The hall is Gothic.
The castle became a protected monument in 1979. Since 1980, it has housed an exhibition of antique furniture. Everything within the castle is also available for sale.
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.