Sassnitz, Germany
3500-2800 BC
Sassnitz, Germany
3500-2800 BC
Tholey, Germany
1st century AD
Otzenhausen, Germany
400 BC
Boitin, Germany
Ostalbkreis, Germany
c. 200 AD
Venz, Germany
9th century AD
Degernau, Germany
Bronze Age
Blaubeuren, Germany
41,000 BC
Koblenz, Germany
1200-800 BC
Bad Dürkheim, Germany
500 BC
Grabenstetten, Germany
2nd century BC
Peiting, Germany
100 AD
Tengen, Germany
1st century AD
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.