Château de Louppy-sur-Loison present remains date back to a castle built in the 13th or 14th century. It was built on an elevated piece of land in a loop formed by the Loison river. Originally the feudal castle had a quadrilateral ground plan with circular towers at its corners. It had a deep moat which was fed by the Loison.
The castle was abandoned and fell to ruin later and Simon II de Pouilly built a new Louppy-sur-Loison castle in the first half of the 17th century. The present church was built on the ruins of the old castle in 1878.
At present the remains of the old Louppy-sur-Loison Castle are part of the grounds of the village church and town hall. Its exterior can freely be visited. The New Louppy-sur-Loison Castle is only some 100 meters away.
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.