Michelfeld Abbey was a Benedictine monastery in Auerbach in der Oberpfalz. The monastery, dedicated to Saint Michael and Saint John the Evangelist, was founded in 1119 by Bishop Otto I of Bamberg. It was dissolved in the Reformation, in 1556. Re-opened temporarily in 1661 and permanently in 1684, it was put under the administration of the Electors of Bavaria on 13 March 1802 and finally dissolved in 1803 in the secularisation of Bavaria.
The abbey church, refurbished throughout in the Baroque style in the early 18th century by the Asam brothers, became the parish church. Other former monastic buildings now accommodate a care home of the Regens-Wagner-Stiftung run by the Franciscan Sisters of Dillingen.
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.