The Ramsberg Castle was built around 1200-1225 probably by the knight Ulrich von Plochingen and Konrad, the monk from Rechenberg. In 1327-1529 the castle was owned by the lords of Rechenberg. The Gothic chapel was built in 1560. It was initially dedicated to St. Margaret and later to St. Martin. Between 1560 and 1580 the castle was rebuilt a second time.
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.