Rumeli Castle – Istanbul, Turkey

Rumelihisari (Rumelian Castle) is a fortress located in the Sariyer district of Istanbul, Turkey, on a hill at the European side of the Bosporus. It gives the name of the quarter around it. It was built by the Ottoman Sultan Mehmed II between 1451 and 1452, before he conquered Constantinople. The three great towers were named after three of Mehmed II's viziers, Sadrazam Çandarli Halil Pasha, who built the big tower next to the gate, Zaganos Pasha, who built the south tower, and Sarica Pasha, who built the north tower. In 1953, on the orders of President Celal Bayar, the…