A sculpture for the sun and stars, created by Nancy Holt.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

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

A house carved into a rock in the 1940s.

Along a California highway is a kind of Jurassic Park made of metal.

The remnants of a failed socialist commune can still be found just off a California highway.

Hundreds of trees made from glass bottles make up this forest on Route 66.

A museum dedicated to a sea that should have never been.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

The quirky salon doubles as a retro museum run by the world's leading "hairstorian."

A magnificent, reportedly haunted mansion built for a composer by Spiritualists.

The tiniest tiki room in San Diego.

This San Diego museum, housed in a former Navy training facility, is dedicated to preserving women’s historic achievements.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

A couple turned their front yard into an artistic masterpiece.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

An artist's vision for connectivity spans seven continents and 16 countries.

On a barren hillside in the Yucca Valley, the recently restored Desert Christ Park has attracted pilgrims and kitsch hunters for over 50 years.

Legends surround this jagged rock formation in the New Mexico desert.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

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

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

A 16th-century horror show built in a lovely Italian garden.