The moated Glatt castle one of the few preserved water castles in the Germany and one of the oldest Renaissance castles in southern Germany. It was built and owned by the Neuneck family from the 13th century until 1671. The 13th century castle was converted into a Renaissance style in 1533-1540 by Reinhard von Neuneck. Today it hosts a museum center.
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.