One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A museum dedicated to the alleged Roswell Incident.

A proto micro-nation sometimes populated by artists, surrounded on all sides by a Utah most barren.

This museum remembers the tough Mormon trek across America through an intriguing array of artifacts.

Incredible sculptures inspired by obscure passages from the Bible.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

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

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.

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

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

A geological mystery on Camelback Mountain.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

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

Miniature art that tells an enormous story.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

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

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

A lush green oasis in the middle of Chicago.

The latest in a series of long glass bridges suspended at terrifying heights.