Ключевые слова: ancient, architecture, arhitecture, beautiful, blue, building, castle, clouds, danube, dobrogea, enisala, europe, fortification, fortress, fortress wall, heracleea, hill, historic, historical, history, landmark, landscape, medieval, medieval castle, military, monument, mountain, nature, nature landscape, old, old rock wall, rock, romania, romania landscape, ruin, sky, stone, summer, sunset, tourism, tower, travel, wall,