This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

Massive prehistoric mammals used these stones as oversized scratching posts.

A performance hall at the American Jewish University moonlights as a sci-fi film location set.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

The overgrown ruins of a once thriving World War I-era copper mine.

Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

Inspiring Earthlings to Boldly Go.

On a quiet suburban street stands a peculiarly decorated house covered in mosaics.

A celebration of once forgotten materials.

Mediums from a psychic utopian community lead a trippy VR journey on a parked desert bus.

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

The taxidermied remains of the "last wild grizzly bear in California" and of the symbol of the state of California.

Cows on a ranch are commonplace, scattered cow bones everywhere? Not so much.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

The artwork that Italians felt California didn't deserve.

This sun-scorched lakebed contains samples of half the natural elements known to humankind.

Machinery left over from California's once thriving mercury industry now attracts artists and explorers.

An abandoned Cold War missile radar site.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Nationwide network of co-ownership underground catastrophe shelters.

Nose around a unique collection of more than 300 natural aromas used to craft fragrances.

This little museum has an exhibit devoted to the elusive forest denizens.

Burping, gurgling geothermal mud pots by the Salton Sea.

Despite being a perfectly pleasant place to be, Loyalton can't seem to attract any visitors.