The eroded core of an ancient volcano is now accessible by a short hike.

Legend says train robbers stashed their gold within the depths of this unusual cave.

The shop's owner has spent decades in the desert wearing nothing but a strategically placed sock.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

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

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

A natural history wunderkammer in the middle of the desert.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

A mysterious spirit totem at the edge of Navajo lands.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

Don't blink or you'll miss it.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Miniature art that tells an enormous story.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A unique book shop with a collection of rare tomes and a nostalgia museum.