Frauenzell Abbey was a house of the Benedictine Order located at Brennberg. Dedicated to the Virgin Mary, the monastery was founded in 1321 by Reinmar of Brennberg. At first a cell or priory of Oberalteich Abbey, it was granted the status of an abbey in its own right in 1424. It was dissolved in 1803 in the secularisation of the period. Some of the buildings were used for the accommodation of the school and the minister's house; the rest were sold to the villagers.
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.