Budapest, Hungary
1885-1904
Budapest, Hungary
1884
Pécs, Hungary
12th century
Fertőd, Hungary
1766
Vác, Hungary
1768-1755
Gödöllő, Hungary
1733
Keszthely, Hungary
1745
Edelényi, Hungary
1716-1730
Tiszadob, Hungary
19th century
Fehérvárcsurgó, Hungary
1844
Nagycenk, Hungary
1750
Ráckeve, Hungary
1702-1722
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.