Château de Lussan is square castle with substantial towers at each corner and was built here in the 15th century for the Lords of Audibert. There is a large clock and iron campanile on one of the towers which was added in the 19th century. The castle was in private ownership until it was seized during the Revolution: since that time the castle has had several different owners and uses and is now used for local council offices.
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.