Ciutadella de Menorca, Spain
1300-1362
Cap d'Artrutx, Spain
1859
Ciutadella de Menorca, Spain
1935
Illes Balears, Spain
11th century BCE
Es Mercadal, Spain
17th century
Mahón, Spain
850 BCE
Islas Baleares, Spain
1200 - 750 BCE
Mahón, Spain
1000 BCE
Alaior, Spain
1700-1400 BCE
Alaior, Spain
1700 BCE
Ciutadella de Menorca, Spain
1000 BCE
Ciutadella de Menorca, Spain
1600-1200 BCE
Es Castell, Spain
1000 BCE
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.