Ключевые слова: ancient, architectural, architecture, blue, bosphorus, bosphourus, bosporus, building, castle, citadel, city, cityscape, constantinople, construction, defense, empire, europe, exterior, famous, fort, fortress, heritage, hisar, historic, historical, history, istanbul, landmark, landscape, old, ottoman, place, protection, rumeli, sea, sky, stones, structure, tourism, tower, travel, turkey, turkish, view, wall, watch,