Staufeneck Castle was built in the 12th century by Burggrafen von Staufeneck. In the year 1307 the castle went into the ownership of the Erzstift Salzburg, under whom it served as one of the maintenance courts in Rupertiwinkel from 1365 to 1805. In 1503, the castle was under Archbishop Leonhard von Keutschach who fundamentally transformed it, giving it its present appearance. Since 1894, the castle has been under private ownership. In the 20th ceuntry, the castle housed a museum. After a complete renovation, it is once again inhabited.
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.