Ancient City Walls of Istanbul
The
first city walls of Istanbul were built during 413-477 by the Byzantine
Emperor thedosius II. they extend 6-7 km. starting from the Marble Tower
on the Marmara shore up to the Golden Horn. The Yedikule Walls was built
by Sultan Mehmet the Conqueror in the years 1457-1458. These walls contain
16 gates. the walls have a three stage defence consisting of the inner
walls, outer walls and a trench. The inner walls are 3-4m thick and 13m
high. The outer walls 15m away, are 2m. thick and 10m. high. In front of
the outer walls, there is a trench. The Istanbul city walls are being
restored within the franework of the UNESCO protection program.
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