Budapest, Hungary
1247-1265
Budapest, Hungary
1851
Budapest, Hungary
1896
Mosonmagyaróvár, Hungary
11th century
Eger, Hungary
13th century
Esztergom, Hungary
10th century
Szeged, Hungary
11th century
Tatai, Hungary
14th century
Visegrád, Hungary
1247
Pécs, Hungary
1498
Gyulai, Hungary
1405
Öreghegy, Hungary
1923-1959
Boldogkõváralja, Hungary
13th century
Siklós, Hungary
13th century
Sümeg, Hungary
13th century
Szigliget, Hungary
13th century
Diósgyõr, Hungary
14th century
Füzér, Hungary
13th century
Ozora, Hungary
15th century
Sárvár, Hungary
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.