An emerald-green grotto just a short trip from Austin.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

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

Water of undetermined depth has attracted rare fish and cult leaders alike.

A snapshot of the city's fascinating voodoo culture.

A hand-built folk art installation covered with messages of God's love.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

An eclectic trailer park retreat in the middle of the California desert.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Collection of vintage trailers double as hotel rooms.

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

Less a museum than a bizarre fantasy world created by artists and engineers.

Rippling sand dunes frozen in the Arizona rock.

Most-visited and most-photographed slot canyon in the American Southwest.

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

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.

A little-known hot spring haven right below the highway.

This super steep hike ascends 2,000 feet in less than a mile.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

A motel dedicated to Southwestern nostalgia.

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

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.