Ключевые слова: ancient, antique, architecture, arhitecture, bastion, blue, building, castle, construction, danube, delta, dobrogea, enisala, europe, feudal, fort, fortification, fortress, heritage, historic, historical, history, landmark, medieval, monument, old, patrimony, rock, romania, royal, ruin, site, sky, stone, strategic, tourism, tower, travel, vestige, vintage,