Gardiner, Montana
We loved Yellowstone Park. Lots of really unusual things to see. Geyser's including old Faithful, underground steam pots, bubbling beds. There were warnings everywhere not to stray off the trails as the earth's crust in spots couldn't sustain your weight and you could cause a steam blast. The steam was HOT, scalding in fact, fortunately we couldn't get close enough to get hurt.
The only thing that was disappointing was the fact that the park is still recover...