Yellowstone National Park
The first national park in the world, on a sleeping supervolcano: half of all the geysers on earth, colourful hot springs, a Grand Canyon of its own and herds of bison. The 142-mile Grand Loop joins them up.
- Best months
- May, Jun, Jul, Aug, Sep
- Stay in
- West Yellowstone, Canyon Village, Cody
- Official site
- nps.gov
One of the 11 national parks where visitors from abroad pay $100 a person on top of the entrance fee, since 1 January 2026. With two or more of them on your trip, the $250 annual pass is cheaper: travel info.