Echternach, Luxembourg
0-200 AD
Mamer, Luxembourg
0-200 AD
Dalheim, Luxembourg
100-200 AD
Rodange, Luxembourg
0-100 BC
Steinsel, Luxembourg
0-300 AD
Koerich, Luxembourg
0-100 AD
Walferdange, Luxembourg
150 AD
Mersch, Luxembourg
0-100 AD
Lellig, Luxembourg
0-200 AD
Grevenmacher, Luxembourg
100-200 AD
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.