Ключевые слова: background, bridge, ceremony, city, closed, concept, conceptual, culture, engagement, eternity, europe, friendship, germany, happiness, heart, historical, holiday, iron, key, keyhole, lock, love, love lock, marriage, married, metal, old, outdoors, padlock, protection, railing, river, romance, romantic, rusty, safety, security, shape, sign, steel, symbol, tourism, tradition, traditional, travel, unity, valentine, valentines day, vintage, wedding,