Which place is best for cycling?

I'm curious to know, which location would you recommend as the most ideal spot for cycling enthusiasts? Are there any particular trails or paths that stand out in terms of scenery, safety, or overall cycling experience? Is there a specific town, park, or nature reserve that consistently receives high praise from cyclists for its ideal conditions? I'm looking for a place that not only offers challenging routes but also guarantees a peaceful and enjoyable ride. Could you please elaborate on the key factors to consider when selecting the perfect cycling destination?