İstanbul had been attacked many times, but the Roman city walls enabled the city to resist. During the final blockade, to prevent any reinforcements and help coming from the Black Sea, Mehmet the conqueror built a fortress which is located at the narrowest point on the Bosphorus and opposite the earlier Turkish fortress on the Asian shore.
The Fortress of Europe’s layout was planned Mehmet himself and it was completed in the amazingly short time of four months in 1452. It was restored in the 1950’s and turned into a museum. Open-air theatre performances are now staged here during the Istanbul Music and Dance Festivals.