Ключевые слова: arches, architecture, beautiful, bridge, bright, building, cathedral, catholic, christian, church, churches, city, cologne, cologne cathedral, dawn, dome, downtown, dusk, evening, famous, germany, gothic, high, hohenzollern, hohenzollern bridge, illuminated, landmarks, night, orange, railway, rhine, river, romanesque, sightseeing, skyline, spire, sunset, tourism, touristic, towers, travel, twilight, unesco, water, world heritage site,