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 Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.