Ключевые слова: architecture, beautiful, blue, bonn, building, castle, castleruin, drachenburg, drachenfels, dragon, europe, excursion, famous, german, germany, hill, holiday, journey, koenigswinter, landmark, landscape, lookout, mount, mountain, natural, nature, naturesanctuary, perspective, place, rhine, river, romantic, siebengebirge, sightseeing, sky, summer, tourism, travel, valley, view,