The oldest part of Aschhausen castle in Schöntal was built in the 13th-14th centuries. In the early 16th century owner Hans Georg von Aschhausen supported the local robber baron, but in 1523 Swabian League sent army to destroy total of 23 this kind of camps of robber barons. Aschhausen castle was also destroyed.
Later it was restored and round tower was added in 1537. The current appearance dates from the 18th century.
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.