Schlierbach Abbey is a Cistercian monastery founded in 1355, and rebuilt in the last quarter of the 17th century. The original foundation was a convent for nuns, abandoned around 1556 during the Protestant Reformation. The abbey was reoccupied as a monastery in 1620, and rebuilt in magnificent baroque style between 1672 and 1712. The monastery again went into decline with the upheavals before, during and after the Napoleonic era. It recovered only towards the end of the 19th century.
In the 20th century the abbey established a viable economy based on a glass works, school, cheese manufacturing and other enterprises. The abbey is open to visitors, who may take tours, attend workshops and dine at the monastery restaurant.
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.