Ключевые слова: adventure, background, bicycle, bike, biker, biking, building, city, concept, conceptual, device, drive, ecological, ecology, environment, environmental, europe, european, fitness, german, germany, health, healthy, historical, lifestyle, locking, metal, old, outdoor, parked, pavement, pedal, pole, public, recreation, restyling, ride, road, secure, sidewalk, sport, station, street, tourism, town, transport, transportation, travel, urban,