The City Church of Bremgarten is an important landmark. The church was built in 1300 and was consecrated in honor of Saint Mary Magdalene. In 1420 Anna of Brunswick-Lüneburg, the wife of Frederick IV, Duke of Austria, gave all rights to the church to the local hospital, under the condition that a mass in her memory would be served once per year. The mass is still being served. In 1529, in the course of the Reformation, the building was converted into a Protestant church, but in 1532 it became Catholic again, Since 1532, the church has been consecrated in honor of Saint Nicholas.
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.