In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A facility built in 1992 for an underground nuclear test remains in place today.

This wilderness hike to a waterfall has an unlikely beginning in suburban Reno.

Mine your own precious stones.

An unusual waterfall in the Santa Rosa Range, within the Great Basin of Nevada.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

A collection of haunted objects and macabre oddities under one roof.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

A lovely park home with a few interesting guests.

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

One of the largest, oldest, darkest, quietest motel rooms in the world.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

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

A natural history wunderkammer in the middle of the desert.

An off-the-beaten path cave with an underground lake.

This curiosity shop contains a museum filled with bizarre, unique objects.

Limestone caves with spectacular showcase chambers.

See massive fossils that are over 200 million years old in northeastern Arizona.

Jurassic Park—A Still Life.

Largest collection of mounted dinosaur specimens in the world.

This geothermal hot spring hides beneath a slowly growing mineral dome.

A crack flared at the base provides a pathway completely through a sandstone ridge near Moab.

This Moab institution functions as both a rock store and a small natural history museum.

Rippling sand dunes frozen in the Arizona rock.