The original Husen castle, documented for the first time in 1246, was probably built here by the dukes of Zähringen in the 12th century. It given into the possession of the counts of Freiburg. In 1303, the castle went to the counts of Fürstenberg as a result of the marriage of Verena of Freiburg.
Count Henry IV of Fürstenberg had the castle extensively remodelled and expanded from 1453 to 1477. A neck ditch and an outer ward guarded the actual castle with its palas and bergfried.
The castle was the residence of the prince’s castellans (Burgvögte). In 1632 it burned down and was rebuilt. In 1643 French-Weimar troops under Jean Baptiste Budes de Guébriant destroyed the castle.
Later the ruins were incorporated into fortified earthworks or schanzen in order to defend the valley against enemy troops. In 1896 the bergfried was given battlements instead of the tower’s conical roof. In 1968 the town of Hausach purchased the ruins from the House of Fürstenberg. Today, parts of the palas wall, the so-called battery tower and the bergfried survive.
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.