Ключевые слова: architecture, beautiful, blue, bridge, buzzer, cologne, country, couple, day, europe, forever, german, germany, heart, historic, hohenzollern, hohenzollern bridge, landmark, loose, love, many, mood, old, padlock, padlocks, people, railway, rhine, rider, ritual, river, scene, sky, style, sunny, symbol, symbolize, teenager, town, traffic, train, travel, water, world, youth,