Bratislava, Slovakia
1452
Banská Bystrica, Slovakia
1702-1715
Košice, Slovakia
1378
Košice, Slovakia
1681
Banská Štiavnica, Slovakia
1488-1491
Bratislava, Slovakia
1907-1908
Banská Bystrica, Slovakia
13th century
Žilina, Slovakia
c. 1400
Hlavná, Slovakia
14th century
Cervený Klástor, Slovakia
c. 1307
Košice, Slovakia
c. 1290
Nitra, Slovakia
12th century
Hronský Benadik, Slovakia
1075
Kežmarok, Slovakia
1593/1717
Trnava, Slovakia
1629-1637
Rožňava, Slovakia
1304
Spišská Nová Ves, Slovakia
14th century
Hervartov, Slovakia
c. 1480
Nové Zámky, Slovakia
1626-1631
Hronsek, Slovakia
1725
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.