Roumeli Hissar Castle
Address: Yahya Kemal Caddesi No. 42 Sarıyer
Phone: (0212) 263 5305
Working Hours: Every day: 9:30-16:00
Closed on Wednesday
At the narrowest part of the Bosphorus, the Conqueror, Sultan Mehmet ordered the great fortress of Rumeli Hisari to be built on the European shore in order to control the commercial and military traffic as a way to prepare for the siege of Constantinople.
He pitted his pashas (generals) against one another, daring them all to be the first to complete his particular tower and crenellated walls. The competition was fierce, and the huge fortress was completed in only four months.
Once completed, Rumeli Hisari, along with Anadolu Hisari on the Asian shore just opposite, controlled all traffic on the Bosphorus, and cut the city of Constantinople off from resupply by sea from the north.