Ключевые слова: ancient, architecture, asia, aya, beautiful, blue, bosfor, building, byzantine, cathedral, christian, church, constantinople, culture, cupola, dome, empire, europe, exterior, famous, fountain, hagia, historic, history, islam, istanbul, landmark, minaret, monument, mosque, museum, old, orthodox, ottoman, outdoors, religion, sky, sofia, sofya, sophia, sultanahmet, tourism, travel, turkey, turkish, view,