Wildenstein Castle was probably built around 1230-1250 by the Counts of Rieneck to protects their lands from the nearby territories of the Electorate of Mainz. It was first mentioned in 1260. The castle fell into decay in the 17th century. The last recorded bailiff died in the dilapidated castle in 1689. After that the castle fell to 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.