Edmundsburg spans over three floors and is cubic with a small, central dome. It can be spotted easily from about anywhere in the old town, especially the Salzburger Dom.
Abbot Edmund Sinnhuber of St. Peter′s Abbey built the Edmundsburg Castle in 1696 and it remained the property of the abbey until 1834. After that, it became the site of a well-known school for boys. Until 2008, the Edmundsburg Castle held some offices and a private library of a foundation.
In 2008, it was let on a long-term-lease to the University of Salzburg and extensively renovated.
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.