Adendorf castle is the successor of a high-medieval castle located to the west of today's site. The small castle hill is few hundred meters from the current palace and was in the 14th century owned by the family of Hüchelhoven.
Arnold von Adendorp built a new castle from 1337 at its present location. It was besieged and conquered by the army of Henry III, Landgrave of Upper Hesse, in the late 15th century.
In 1659-1663 the medieval castle was transformed as a representative Renaissance schloss. Another reconstruction took place in 1842. The changes included the filling of the moat between the outer bailey and main building.
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.