I've been to Denver a couple of times. We stayed there for a bit years ago for a U2 concert, I don't remember what all we did...I remember going to the Denver Mint actually one of the people we were with was a coin collector. The 16th Street Mall is cool. We drove through Rocky Mountain State Park on our way back from Ohio - I'd love to go back we didn't get to stop much as we were on a time constraint to get back home. But it was pretty enough to make it worth making our drive home longer. And if you get bored I'm only an 8 hour drive away. Kate (Kater) lives in Ft. Collins I think which is pretty close to Denver she probably has some good ideas too.