After 12 years living in Montana, I finally made it to Yellowstone National Park. It is by far the weirdest, most bizarre parks I've been to. The geothermic activity makes the area one of the most unique places on the planet.
Boiling River flowing into the Gardner River
With limited time, Sage and I blitz the park trying to fit as much in as possible. We decided on the largest loop through the park we could do with hopes of seeing the most. As it turned out, it limited our time at each place.
The park's roads systems were great, passing by nearly all the major attractions the park had to offer. Short hikes from the road got us to the spectacular views and bizarre sights while keeping us within our timeframe.