Bergen auf Rügen Abbey was a monastery for Cistercian nuns. It lasted from the end of the 12th century to the early 16th century as a Roman-Catholic monastery and then, until 1945, as an Evangelical aristocratic nunnery.
The Principality of Rügen belonged to the Bishopric of Roskilde since its conquest by the Danes in 1168, Bishop Absalon of Lund being responsible for introducing the territory to Christianity. In 1193, Prince Jaromar I of Rügen founded a nunnery near the fort (Burgwall) on the Rugard, and had it consecrated as St. Mary's Church which had originally been planned as a palace church (Pfalzkirche). The monastery was a branch of St. Mary's Abbey, Roskilde, from which the first Benedictine sisters came. When the two monasteries transferred to the Cistercian order is not known. A confirmation of the Cistercian ordinances and possessions was made by Pope Innocent IV in 1250.
On its foundation, Jaromar I granted the monastery with extensive, but scattered, estates, which were mostly on the island of Rügen. Until the mid-14th century are only a few donations by his followers or internal documents of the monastery known. After that it was increasingly involved in the purchase of whole parishes, such as in 1344, which consisted of 14 villages, and in 1357 the estates of Arnold Pape, the goods of John of Kiel in Wieck, Dranske and Goos.
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.