Ключевые слова: architecture, beautiful, building, castle, city, city of sigmaringen, city photography, cityscape, danube, danube river, donuts oberes, europe, european travel, famous, germany, historic, historical, history, hohenzollern schloss, hohenzollernschloss sigmaringen, homeland, landmark, landscape, medieval, nature, old, outdoor, reflection, river, sky, southern germany, tourism, tower, town, travel, urban, view, water,