Ключевые слова: bridge, city, cologne, colorful, couple, culture, day, eternity, europe, fence, friendship, germany, happiness, heart, hohenzollern, icon, koln, landmark, lock, love, many, metal, padlock, padlocks, people, red, relationship, rhine, river, romance, steel, symbol, symbolize, tourism, tradition, travel, unbreakable, urban, view, wedding,