Vestre Slidre, Norway
c. 1268
Larvik, Norway
12th century
Larvik, Norway
c. 1100
Revetal, Norway
12th century
Fredrikstad, Norway
c. 1182
Rakkestad, Norway
c. 1200
Selbu, Norway
c. 1150
Overhalla, Norway
1187
Inderøy, Norway
c. 1150
Snåsa, Norway
1220
Rykene, Norway
c. 1200
Høvåg, Norway
1150
Slidre, Norway
1215
Ringerike, Norway
13th century
Darbu, Norway
c. 1250
Sparbu, Norway
1150-1200
Løten, Norway
13th century
Gausdal, Norway
1250-1300
Ogna, Norway
c. 1250
Hole, Norway
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.