One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

Ancient pueblos built into the base of a natural canyon wall.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

What's a diner from the 1939 World's Fair doing in a remote Utah mountain town?

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

This creepy, abandoned cemetery is all that remains of a once booming mining town.

Where a guard killed nine German prisoners during one of the worst 20th-century POW camp massacres in U.S. history.

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

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

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

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Outsider Art Community.

An urban laboratory.

A colorful, century-old cemetery of the Yaqui Indian Tribe hidden amid the suburban sprawl of Tempe, Arizona.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

Two geoglyphs that are truly unique to North America.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

A spiritual vortex among the red rocks in Sedona.