Kohlstein Castle is situated on a rocky hillock in the village of Kohlstein northwest of Tüchersfeld and is the most recently built castle in Franconian Switzerland. It is also one of the smallest and most romantic castles. Today it is in private ownership and may not be visited.
The castle may have been built around 1486 by Conz of Hirschaid. It was probably originally an allodial estate of the Lords of Hirschaid. Later, feudal sovereignty passed to the Bishopric of Bamberg.
In 1525 was destroyed in the Peasants' War. It was immediately rebuilt. In 1607/1608 the Hirschaid family had to sell their barony as they were short of money. On 23 May 1608 Wolf Philipp Groß von Trockau zu Tüchersfeld was enfeoffed with the castle and lordship. During the Thirty Years' War the castle appears to have been destroyed because in 1636 a modest new structure was built. It was comprehensively renovated between 1707 and 1714.
A garden house was probably built at this time, which was converted in 1743 into a castle and village chapel.
The Groß von Trockau family, who called themselves from 1658 zu Kohlstein und Tüchersfeld, had to sell the castle in 1713 to Otto Philipp von Gutenberg. After his death, his niece, Maria Anna Groß von Trockau, inherited the castle and estate.
The current structure, a residential building with attached tower, dates mainly to the 18th century. The tower was renovated in 1890.
In 1961 the Groß von Trockau family sold the castle, but not its associated chapel. The castle has had several owners since then.
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.