Rumli Hisar (Rumelian Castle) (Rumelihisari) hilltop 15th century fortress with multiple towers, walking paths and water views, Istanbul, Turkey, Europe

photography horizontal color image travel destinations travel high angle view outdoors day istanbul turkey europe rumelihisari rumelian castle castle fortress built structure architecture medieval history past no people building exterior building river water motorboat boat tree landmark tower architectural boats nautical vessel nautical vessels transport castles fort forts fortified fortification historic historical travel destination tourist destination tourist destinations daytime nobody no one no person outdoor outside rivers flowing water