3. Walls Of Babylon (Iraq)
One of the oldest walls on our list of famous walls, the walls of Babylon is said to have been built in 575 BC, the reminiscence of which still exists. Found some 85 kilometers south of Baghdad, the walls are remarkable and are said to have had a defensive purpose. Made of sun-dried bricks, the Walls of Babylon were one of the original Wonders of the World.