Address: Anadolu Hisarı Mahallesi, 34810 İstanbul Beykoz
Phone: (0212) 263 5305
Working Hours: ALWAYS CLOSED FOR MANY YEARS
Ottoman Sultan Bayezid I built Anadolu Hisarı (Anatolian Fortress) between 1393 and 1394 on the narrowest point of the Bosphorus strait, on the Asian (Anatolian) side of the city. He aimed to create a safe way to cross the Bosphorus for his armies at the time of war.
Sultan Mehmed II added a thick 2 meter wall and three additional watch towers to protect the fortress. After the conquest of Constantinople, it served as a military prison.