There is a ritzy shopping center called Cherry Creek Mall, which is a pretty big attraction. Denver has a few smaller amusement parks, a water/aquarium attraction that's ok, a couple of fair museums, and of course, the mountains. Just because skiing is over doesn't mean you can't go up and have fun. They have sky slides on the slopes that are pretty fun, and it is fun to hike the trails, imo. Plus, it's way less hot here then everywhere else right now.