Burg Metternich was mentioned in documents first time 1268, when it was owned by Johann von Braunshorn. It is thought the castle is even older, with some historians indicating 1129 as the year of construction. Until the first half of 17th century, the castle was owned by Counts von Nassau-Dillenburg.
The castle was not damaged badly before 1689, when French army destroyed the castle during the Nine Years' War. It was never completely rebuilt.
The last member of the family to own the castle was Klemens von Metternich, one of the most famous diplomats of the Austrian Empire – he was foreign minister from 1809 to 1848.
Today there is a hotel and restaurant.
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.