Levoča, Slovakia
Spišské Podhradie, Slovakia
12th century
Banská Štiavnica, Slovakia
12th century
Bardejov, Slovakia
Vlkolínec, Slovakia
Spišské Podhradie, Slovakia
1285
Spišské Podhradie, Slovakia
14th century
Kežmarok, Slovakia
1593/1717
Hervartov, Slovakia
c. 1480
Hronsek, Slovakia
1725
Tvrdošín, Slovakia
15th century
Bodružal, Slovakia
1658
Ladomirová, Slovakia
1742
Leštiny, Slovakia
1688
Ruská Bystrá, Slovakia
1720-1730
Zehra, Slovakia
13th 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.