Explore the historic highlights of Quebec City
Quebec City, Canada
1608
Quebec City, Canada
1893
Quebec City, Canada
1687-1723
Quebec City, Canada
1800-1804
Quebec City, Canada
1647
Quebec City, Canada
1896
Quebec City, Canada
1620-1759
Quebec City, Canada
1639
Quebec City, Canada
1693
Quebec City, Canada
1535
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.