SIGHTSEEING ON FOOT is enlightening, albeit slow. Meanwhile, cars let you cover a lot of ground, but also come with a sensory sacrifice. Unlike other modes of transportation, biking allows riders to see, smell, hear, and feel a city, while still giving passengers a leg up on pedestrians.
When judged by their infrastructure (designated bike lanes, roadside rentals, international airport access), biker friendliness (from both drivers and pedestrians), and visual appeal (easy to look at and get around), these are the best cycling cities in the world.
Source : Best cities for cycling