Sommerau Castle was built on a rock spur around which the Ruwer river flowed on three sides. In the 13th century the castle was built by the Trier knight family 'von der Brücke', who had their ancestral seat in the Barbarathermen. The castle had fallen into disrepair by the beginning of the 19th century at the latest.
The facility measures 40 x 10 m. In the west, the remains of the former palace or residential building tower up to a height of 10 m, and in the east, the four-storey square keep, which with its four floors also served as a residential tower, is around 16 m high. Apparently an ascending wooden battlement led to a door about 3 m high. To the south on the fourth floor there is a large rectangular door with a toilet bay, the masonry of which is placed on consoles made of red sandstone. The residential building shows, recognizable from the inside, three full floors and half a fourth with the protruding remainder of a chimney that begins on the second floor. Only remnants of the rising masonry can be seen of the surrounding wall that supported the battlements. The remaining transverse walls are in the ground, the ground plan can only be determined through excavations.
Today the ruins are freely accessible.
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.