Rumeli Fortress
Castles
Rumelihisarı or Boğazkesen Fortress is a medieval Ottoman fortress located in Istanbul, Turkey, on a series of hills on the European banks of the Bosphorus.
https://en.wikipedia.org/wiki/Rumelihisar%C4%B1
Rumelihisarı or Boğazkesen Fortress is a medieval Ottoman fortress located in Istanbul, Turkey, on a series of hills on the European banks of the Bosphorus.