Aspen. Say the name and you immediately think epic skiing. Come spring, though, all that snowpack, all those hundreds of inches of snow come sliding down that mountain to feed the Roaring Fork River. Summer brings with it a season of whitewater rafting and kayaking you'll not soon forget.
As always, be sure to check with your guide of choice regarding best time of year to raft the Roaring Fork, experience levels and water levels, to be sure your rafting vacation is a safe one.