The Walls Of Constantinople In Istanbul, Turkey Editorial Image

The Walls of Constantinople or Theodosian Walls are an impressive work of Byzantine military architecture, the largest in the Byzantine Empire. Built of stone, they surrounded and protected the city of Constantinople. They are considered one of the most impressive and complex military works of antiquity ever made. They were considered impregnable, so much so that, even during the last siege conducted by the Turks, the newly designed cannons were not entirely effective in opening a breach in the Byzantine walls.