Anadolu Hisarı (Anatolian Fortress) is located on the Anatolian Side of the Bosphorus, the area where the Göksu River meets the sea.

Sultan Yıldırım Bayezid commissioned Anadolu Hisarı in 1394. He wanted to conquer Istanbul and besieged the city with the aim of obstructing aid to the Byzantine Empire via the Black Sea.

Anadolu Hisarı was renovated in 1452 by Sultan Mehmed the Conqueror during the construction of Rumeli Fortress on the opposite shore to create a choke point on the Bosphorus during the final and successful blockade on the city.

The Hisar was used for some time as a prison and played an important role in stopping the Kazakhs attacking the Bosphorus in the 17th–18th centuries. In the following years, it lost its importance but it is still one of the most beautiful places of Istanbul. I suggest you put it on your to do list while planning your trip to Istanbul!

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