Glauchau was founded by a colony of Sorbs and Wends, and belonged to the lords of Schönburg as early as the 12th century. Hinterglauchau Renaissance-style castle was built from 1470 on the site of a castle built by the Lords of Schönburg around 1170 and has been the center of their rule for centuries . With the construction of the parts of the building, later called Castle Fordglauchau, the facility was expanded towards the city from around 1525. At the same time the main castle was rebuilt. In the early 20th century a museum was set up in the castle.
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.