Ключевые слова: active, activity, basel, bicycle, bike, biking, black, bright, city, cycling, day, ecological, ecology, environment, environmentally, friendly, health, healthy, holiday, leisure, lifestyle, many, outdoor, park, parked, pavement, quay, recreation, rest, ride, river, riverside, road, route, silhouette, simple, sport, stop, street, sun, sunny, sustainable, switzerland, town, traffic, transportation, travel, urban, waterfront,