Celles-sur-Belle royal abbey was founded in 1137. It was rebuilt in the 15th century and destroyed by Huguenots in 1568. The current abbey was reconstructed between 1660 and 1685 on the orders of Louis XIV.
Overlooking both the Belle Valley and beautiful French-style gardens, the majestic 17th-century convent buildings in the Louis XIV style house a museum where you can see the Abbot's room, a recreated monk's cell, and collections of religious objects and ecclesiastical clothing.
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.