El Ejido, Spain
1769
Aguilar de la Frontera, Spain
9th century AD
Alconchel, Spain
12th century
Albanchez de Mágina, Spain
14th century
Monleón, Spain
13th century
Losacino, Spain
12th century
Bedmar, Spain
15th century
Villamayor de Monjardín, Spain
9th century AD
Elda, Spain
c. 1172
Coruña del Conde, Spain
10th century
Lanjarón, Spain
13th century
Moclín, Spain
13th century
Folgoso de Caurel, Spain
12th century
San Esteban de Gormaz, Spain
10th century
Moguer, Spain
14th century
Cartagena, Spain
1773-1778
Benicasim, Spain
10th century AD
Fuentidueña de Tajo, Spain
12th century
Monzón de Campos, Spain
14th century
Monteagudo de las Vicarías, Spain
15th 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.