Yedikule Fortress (Turkish: Yedikule Hisarı or Yedikule Zindanları; meaning "Fortress of the Seven Towers") is a fortified historic structure located in the Yedikule neighbourhood of Fatih, in Istanbul, Turkey.
Built in 1458 on the commission of Ottoman Sultan Mehmed II, the seven-tower complex was created by adding three new towers and fully enclosing a section of the ancient Walls of Constantinople, including the twin towers that originally constituted the triumphal Golden Gate (Turkish: Altınkapı) built by Roman Emperors Theodosius I and Theodosius II.
The fortress came to be known as the home of a formidable royal dungeon that housed notable figures throughout its history, and the associated intrigue captured the public's imagination over the centuries in various legends, stories, and the arts.
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