Orange, France
1st century AD
Pompei, Italy
0-100 AD
Brescia, Italy
69-96 AD
Reims, France
200-300 AD
Rome, Italy
4th century AD
Sarandë, Albania
800 BCE
Trier, Germany
2nd century AD
Dax, France
2nd century AD
Aosta, Italy
around 0-10 AD
Berat, Albania
c. 314 BCE
Saintes, France
18-19 AD
Pula, Croatia
27 BCE - 14 AD
Saint-Rémy-de-Provence, France
600-500 BCE
Metz, France
4th century AD
Vienne, France
10 BC
Trier, Germany
100-200 AD
Lugo, Spain
3rd century AD
Brindisi, Italy
2nd century AD
Rome, Italy
104 AD
Cartagena, Spain
2nd century BCE
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.