Explore the historic highlights of Pärnu
Pärnu, Estonia
1744-1747
Pärnu, Estonia
1797
Pärnu, Estonia
15th century
Pärnu, Estonia
1768
Pärnu, Estonia
1675-1686
Pärnu, Estonia
1895
Pärnu, Estonia
1880's
Pärnu, Estonia
1905
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.