Château de Montcornet was built between the 11th and 12th centuries by the first occupants, the Montcornets. In the 13th and 14th centuries, the fortress passed to Miles de Noyer and then to the Mello family. In 1446, Antoine I de Croy repurchased the castle and rebuilt it almost completely. In 1613, Charles of Gonzaga, who was in the process of building the nearby Charleville, capital of the Principauté d'Arches, purchases the castle. From then it passed into the hands of the Meillerais, then finally to the duke of Aiguillon, who dismantled it around 1760. Only ruins survive today.
The artefacts excavated from the castle grounds (keys, currency, pottery, bones, etc) are on display in a room of the castle.
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.