One of my favorite places was Great Sand Dunes National Park. It's really amazing to drive down a flat-as-a-pancake mountain valley and come to a great pile of sand at one end. It's exhausting but rewarding to scale them; all you see is sand, but it's beautiful.
Our next adventure was climbing a fourteener (> 14000 ft or 4267 meters). I think climbing Mt. Yale is one of my favorite hikes. It was a challenge, but it sure felt good to get to the top and eat a sandwich.
Going down was a bit of a challenge. My toes felt like they were going to fall off!
The next exciting stop was Devil's causeway. A short, high, stretch of rock that is 1.3 meters across at some points.
Getting back to Minnesota was one