First mentioned in 1125, Giechburg castle was in possession of Bamberg's prince-bishops since 1390. During wartimes it burned down several times, was rebuilt, destroyed again and rebuilt once more in 1600. In 1971 the administrative district of Bamberg bought Giechburg castle and restored it. Nowadays Giechburg castle is a popular excursion destination including a restaurant which offers a venue for meetings and cultural events. At an altitude of 520 metres you can enjoy a wonderful view across the region of Bamberg. Various art exhibitions take place in the donjon regularly.
Archeological evidence indicates that this hilltop was fortified as far back as Neolithic times. From 1421 until 1459, a period of disorder associated with the Hussites in nearby Bohemia, the castle was further fortified and strengthened until it took its final form as a mature medieval castle with a keep.
As gunpowder warfare matured, Giechburg was no longer useful as a strongpoint. It was adaptively reused by the prince-bishops, especially Johann Philipp von Gebsattel, as a hunting lodge and by later prince-bishops as the headquarters of a horse farm. However, with secularization in 1802, Giechburg no longer had an owner with an interest in maintenance and upkeep. The former castle was used as a quarry for dressed stone, and became a ruin.
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.