Maribo, Denmark
1416
Nakskov, Denmark
13th century
Sakskøbing, Denmark
13th century
Nysted, Denmark
c. 1300
Dannemare, Denmark
13th century
Torrig, Denmark
1350
Nakskov, Denmark
ca. 1100
Maribo, Denmark
c. 1100
Nakskov, Denmark
c. 1464
Fejø, Denmark
1240
Nørreballe, Denmark
14th century
Errindlev, Denmark
13th century
Holeby, Denmark
c. 1250
Harpelunde, Denmark
c. 1250
Nakskov, Denmark
14th century
Maribo, Denmark
12th century
Kettinge, Denmark
1200-1250
Sakskobing, Denmark
c. 1200
Horslunde, Denmark
13th century
Toreby, 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.