The ruin of Wieladingen Castle lies about 90 metres above the Murg valley. The well-preserved ruin was structurally secured and the 20-meter castle keep was made accessible again with an external spiral staircase leading up to the observation platform with a panoramic panel of the Alps.
The castle wass built in the 12th century and documented first time in 1260.
In the 13th/14th century, the castle was inhabited by squires and knights of Wieladingen. They disappeared from the annals of history by the end of the 14th century.
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.