Clumber park si great for walking cycling as the site is in the middle and there are lots of walks. Some of the places to visit are Robin hood visitor centre at Edwinstow, Rufford abbey and park, Southwell minster, Hardwick hall, Bolsover castle,Visitor centre cresswell craggs,Nottingham castle, caves, museums and shops, National water sports centre all these are within 5 - 45min drive even Chatsworth house is only about 1 hour away and there are lots of places i have'nt mentioned, so I don't think that you should be bored. Hope this helps