The Abbaye du Relec was founded in 1132. It had an innovative hydraulic mechanism for irrigating the gardens and pumping water through the buildings. It also made a significant contribution to the local economy by developing the lands called La Quévaise. Today There is a large Romanesque church, vestiges of cloisters, two lakes, a pathway lined with trees, a monumental fountain and ancient gardens surrounded by deep ditches; all these elements trace the existence of the monks here for over six centuries. This Abbey is open to the public all year round.
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.