Drohobych, Ukraine
15th century
Powroźnik, Poland
17th century
Yasinia, Ukraine
1824
Rohatyn, Ukraine
1598
Kwiatoń, Poland
1700
Smolnik, Poland
1791
Turzańsk, Poland
1801
Zhovkva, Ukraine
1720
Owczary, Poland
1653
Potelych, Ukraine
1502
Radruż, Poland
16th century
Brunary, Poland
18th century
Matkiv, Ukraine
1838
Nyzhniy Verbizh, Ukraine
1788
Uzhok, Ukraine
1745
Chotyniec, Poland
1671
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.