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:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.