This massive crater in the middle of nowhere was used to train astronauts for moon landings.

The highest point in Nevada had to be decided by court order after California tried to claim it as their own.

Get a taste of the Wild West and a glimpse into the gold rush in Goldfield's oldest continually-running business.

Dramatic river bend surrounds a natural red-rocked pedestal.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

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

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

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Rippling sand dunes frozen in the Arizona rock.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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

A stoic rock cairn is all that remains to remember one of the more brutal instances of frontier treachery in American history.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

One of the most unusual geological features, recognizable from a dozen hit movies.

The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

A hard-to-reach oasis in a desolate corner of Death Valley National Park.

The rocks in this arid basin leave trails of movement behind them.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

This sculpture garden in Death Valley makes you feel like you've slipped into some alternate reality.

In the middle of the desert, miles from any human life, sat an anomalous pay phone that still magically answers your calls.