Kyiv, Ukraine
1713
Kyiv, Ukraine
1037
Kyiv, Ukraine
2000
Kyiv, Ukraine
1051
Kyiv, Ukraine
1893-1895
Kyiv, Ukraine
1106-1108
Kyiv, Ukraine
1696
Kyiv, Ukraine
1113-1125
Kyiv, Ukraine
1882
Kyiv, Ukraine
1899-1909
Kyiv, Ukraine
1070-1077
Drohobych, Ukraine
15th century
Yasinia, Ukraine
1824
Rohatyn, Ukraine
1598
Zhovkva, Ukraine
1720
Potelych, Ukraine
1502
Matkiv, Ukraine
1838
Nyzhniy Verbizh, Ukraine
1788
Uzhok, Ukraine
1745
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.