Château de Sauveterre was constructed at the end of the 13th century by Edward I of England on one of the principal routes between Périgord and Agenais. During the Hundred Years' War, it became a centrepiece in the Anglo-French war of attrition. It was burned in 1789 during the French Revolution.
It was bought by the aviator Jean Mermoz in 1936, less than a year before his death. He had seen the castle from the air. After his death, the castle was abandoned and became the property of the commune until it was sold in the 1980s.
The castle in its entirety, as well as its grounds and moat, have been classified as historical monuments since 19 September 2003. It is privately owned.
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.