Ksenia Mardina
Yedikule Fortress by the city wall is the main defense of old Constantinople. Its highlight is the Torture Museum in one of its seven towers – in the 15th century it housed Mehmed the Conqueror treasures but later he turned it into prison for noblemen- wazirs, foreign spies and masters. You'll be numb seeing the torture gear compared to which inquisition is a child's game. Among other curiosities are canon balls in the yard, graffiti and dark spots resembling Byzantine blood.
