California's oldest existing theater building hosted an impressive cast of celebrities, including hosting Mark Twain's first lecture.

This giant shopping mall still holds signs of its automotive past.

Thousands of turbines whir at at the origin of North American wind power.

The oldest lawn bowling club in the United States.

One of the largest fleets of armored vehicles in the world, sitting out in the California desert.

"The Star Factory" cranked out Hollywood stars like nobody's business.

Everything you always wanted to know about borates is here.

A long-vacant Scottish Rite temple in Hollywood has been converted into an art museum filled with Masonic relics.

A 90-acre park on former landfill that hosts an annual kite festival.

The world’s largest concentrated solar plant generates as many problems as megawatts.

You don't want to get caught in this trap--or do you?

Abandoned landscape once home to "the world's largest winery."

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

A huge collection of rocks, gems, and crystals.

Where the writer penned his famous story about a jumping frog.

A black and white painted wall creates an optical illusion in the California desert.

A meditative space out of a fantasy story.

Humboldt's human-powered sculptures race across land and sea for days on end in a wacky quest for dominance.

A black and white mural stands out from its psychedelic surroundings.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

Fans of the spicy bright-red sauce can tour where it's made.

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

A massive volcanic plug is now a protected area that hosts a number of bird species.