One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

This rustic old building is said to be the most photographed barn in America.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Home to a timed geyser created by complete accident.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

Home to the deepest rift anywhere on Earth.

A small flooded ghost town with a few scattered structures remaining.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

A dazzling display of red rocks weathered into spires and hoodoos.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

Largest man-made excavation on earth!

A tunnel with windows, so you don't miss out on the impressive views.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

This gallery of prehistoric red ochre art lines the wall of a scenic segment in Utah's San Rafael Swell.

A ghost town that held steady longer than most, but finally gave up the ghost.

The fifth-longest natural arch in the world, and the longest outside China.