These aggressively sustainable art homes look like something out of 1970's science fiction.

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

A working ranch doubles as a sustainable hub for world-renowned classical music and large-scale sculptures.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

A collection of 16,000 antlers crammed beautifully into a small shed.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

"Polynesia on the Plains."

A meditative space out of a fantasy story.

The biggest pinball arcade in the world has over 600 pinball machines, and 300 arcade machines.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

World's largest collection devoted to one fruit.

These lush groves of fan palms rise up like oases out of southern California's Colorado Desert.

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

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

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

Explore 10 acres of environmental sculptures.

The only thing stranger than stumbling onto these philosophical musings is the story of the homesteader who created them.

The illuminating collection of L.A. street lights is run by the city and only opens one day per month.

What began with a single, 357-pound chunk of the Canyon Diablo meteorite grew to be an impressive collection. 

Hidden above a drug store on a nondescript corner of Lincoln Heights is a private clubhouse for intrepid explorers.

Panorama exhibition hall in old silent theater with a beautiful backyard garden.

Formerly frequented by Hollywood stars and now open for tours.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.