Oberkapfenberg is mentioned in a document for the first time in 1173. The current castle was erected around 1264. It was the residence and administrative seat of the Counts of Stubenberg and the seat of the regional High Court for most of the Mürz Valley. Around 1550 it was converted into a Renaissance fortress that was abandoned in 1739 and fell into disrepair. After 1955 the Stubenberg Family rebuilt their ancestral fortress within the old walls and adapted it into a castle hotel. Today Burg Oberkapfenberg is a cultural and culinary attraction of more than regional importance.
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.