The Kehlburg castle was built probably in 933 By the bishop Altwin of Brixen at the hillside over Gais. The most important owners later were the noble family Rost zu Aufhofen, which had the castle in possession for nearly three centuries.
After the fire in 1944 where the castle was nearly completely destroyed, the chapel of the holy Erasmus was rebuild so this was used for many years as a much visited pilgrimage. Unfortunately the castle and the chapel is damaged by vandalism.
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.