Lerwick, United Kingdom
1652-1653
Lerwick, United Kingdom
2007
Shetland, United Kingdom
2500 BC
Shetland, United Kingdom
1599
Lerwick, United Kingdom
200-100 BC
Sandwick, United Kingdom
100 BC
Shetland, United Kingdom
400-200 BC
Virkie, United Kingdom
100 BC
Shetland, United Kingdom
1100s
Uyeasound, United Kingdom
1598
Shetland, United Kingdom
2500-2000 BC
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.