I loved Boulder, not far from Denver...I hiked into the mounains, took a tour of the Celestial Seasonings Tea Factory, which was really cool. They let you go into a big room where they have to keep all of the bags of spearmint and peppermint seperate from everything else. Clears the sinuses nicely. Overwhelming....
...only fly in the ointment, and WTWizard made me remember...do NOT stop at the Kingdumb Hell as you pass it on the road to the factory. LOL
There are some facilities to take hot air balloon rides but I think that has to be planned ahead and done early, weather permitting. I just missed that opportunity a couple of years back......ballooning in the Rockies... great idea...
downtown Denver...16th street pedestrian mall is nice if the weather is good...great for people watching..... There is a free tram that saves you a lot of walking that runs every few minutes... Science Museum in Denver looked interesting...I wish I would have had time to really check it out...I was working all but one day that week....
...anything in the Rockies or the National Parks...choose the ones off the beaten path....
Snakes ()