Talmont-Saint-Hilaire, France
10th century AD
Lassay-les-Châteaux, France
12th century
Mazé-Milon, France
1772
Haute-Goulaine, France
12th century
Fresnay-sur-Sarthe, France
10th century AD
Baugé en Anjou, France
1442
Herbignac, France
13th century
Durtal, France
15th century
Montaigu-Vendée, France
13th century
Ancenis, France
15th century
Saint-Georges-sur-Loire, France
16th century
Bessé-sur-Braye, France
1450-1490
Missillac, France
15th century
Pouzauges, France
12th century
Sablé-sur-Sarthe, France
1717-1750
Ombrée d'Anjou, France
12th century
Île d'Yeu, France
14th century
Challain-la-Potherie, France
1847-1854
Ballon-Saint-Mars, France
11th century
Sillé-le-Guillaume, France
16th century
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.