The Commandery of Libdeau is a former Knights Templar commandery, founded before 1190. It is at Toul, in Lorraine. It became a Knights Hospitaller commandery following the dissolution of the Order of the Temple in 1312 by Pope Clement V at the Council of Vienne. During the French Revolution, it was nationalized by the state and sold as a bien national in July 1794.
The only remaining buildings of the commandery of Libdeau are the gothic chapel, at Libdeau dating from the first quarter of the 13th century, and a 17th-century townhouse situated in the city of Toul.
The gothic portal of the chapel and several ledger stones coming from Libdeau have been kept since the 1960s at the Palace of the Dukes of Lorraine, home of the Musée Lorrain in Nancy.
The other buildings of the commandery were rebuilt after the Thirty Years' War and are now used for housing and farming.
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.