Yellowstone National Park

Right next door (really!)to the town of West Yellowstone is the state Wyoming. As you leave the town, you cross into the state as well as enter the Yellowstone NP.
What can I say! - Yellowstone is an amazing place -
we saw lots of the wildlife, from bison to bears -

a close encounter with a bison

and we saw some great landscapes, from hot pools, to geysers to its own grand canyon with waterfall -

one of the many hot pools

Old Faithfull

Yellowstone's "Grand Canyon"