Fuglebjerg, Denmark
12th century
Egtved, Denmark
1170
Gram, Denmark
12th century
Haderslev, Denmark
12th century
Hedensted, Denmark
c. 1175
Sønderborg, Denmark
12th century
Kolding, Denmark
12th century
Kolding, Denmark
c. 1150
Neksø, Denmark
ca. 1200
Skibby, Denmark
c. 1150
Logstor, Denmark
c. 1100
Vordingborg, Denmark
1480
Fejø, Denmark
1240
Gram, Denmark
12th century
Haderslev, Denmark
12th century
Kolding, Denmark
12th century
Roskilde, Denmark
12th century
Vrå, Denmark
1165
Bogø, Denmark
12th century
Rønde, Denmark
c. 1200
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.