A huge musical instrument played by the ocean.

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

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

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

A reproduction of earth's many biomes.

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

A Tucson museum and performance space full of found-object movable sculptures.

Miniature art that tells an enormous story.

A park in Mexico offers all the experiences of an illegal border crossing except for one: the border.

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

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

A self-built castle made by a mysterious man.

The unusual burial monument of Arizona's first governor.

A mysterious "wedding cake" castle in the middle of the urban desert.

A geological mystery on Camelback Mountain.

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

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

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

Collection of vintage trailers double as hotel rooms.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

What is the Thing?