Vlotho was a medieval hill castle above the town with same name. The extended property is located on the Amtshausberg with a steep grade to east and south. The bent river has a natural harbour, on the medieval main road from Frankfurt to Bremen.
The castle was built around 1250. It was razed around 1368. The foundation is the only part from the medieval period. Drawings dating back to 1581 are extant, but they are no reliable representation. The castle ruins were demolished in 1709, with only the dungeon surviving until 1936. The castle ruin is c. 110 metres m long and c. 60 metres m wide. The surrounding wall is mostly preserved.
Part of the reconstructed castle is covered by a modern protective roof. The property features a restaurant with garden area. The terrace offers a view over the Weser valley.
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.