Explore the historic highlights of Sofia
Sofia, Bulgaria
4th century AD
Sofia, Bulgaria
11th century
Sofia, Bulgaria
3rd century AD
Sofia, Bulgaria
1892
Sofia, Bulgaria
1882-1912
Sofia, Bulgaria
6th century AD
Sofia, Bulgaria
1856-1863
Sofia, Bulgaria
1566
Sofia, Bulgaria
13th century
Sofia, Bulgaria
1934
Sofia, Bulgaria
1905-1909
Sofia, Bulgaria
1904
Sofia, Bulgaria
3rd century AD
Sofia, Bulgaria
1968
Sofia, Bulgaria
1547/1901
Sofia, Bulgaria
10th century AD
Sofia, Bulgaria
1897
Sofia, Bulgaria
1973
Sofia, Bulgaria
1910-1940
Sofia, Bulgaria
16th century
Sofia, Bulgaria
1345
Sofia, Bulgaria
1493
Sofia, Bulgaria
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.