If you want an adventure I suggest Africa

i'm sure you'll have an amazing experience here. Ok, let's be serious.
First suggestion is Queenstown, New Zealand - You can have an Adventurous journey here for outstanding trekking and climbing, excellent mountain biking, and some of the best skiing in the southern hemisphere. Jet boating is an extremely popular pastime, as is bungee jumping.
Second, Chamonix, France- that is if you are looking for a mountain sports.
Third, Boulder, Colorado - USA , it is recommended if you are a rock climber.