Lest we forget exactly why this whole “national parks” malarkey came about: the Roosevelt Arch stands at the northern entrance to Yellowstone National Park, in the little Montana town of Gardiner. (Click to enlarge, because you’ll want to read the inscription above the arch.)
More Yellowstone, because it’s a photogenic kinda place: the Emerald Pool hot spring, the Firehole hot spring (sounds like the aftermath of a night out at the local curry house), the Artist’s Paintpots geothermal complex, and the after-effects of the disastrous 1988 bushfires.
Bonus: a double rainbow, all the way across the sky! Double rainbow, you guys! What does it mean?