Colorful Native American paintings are hidden within this small cavern.

This "synagogue" is not what it seems to be.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

Wild West history in Hollywood style.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

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

The beauty and the beast of hydraulic mining is on full display at this California Historic State Park.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.

This mysterious petroglyph evokes the ancient swastika symbol but was later vandalized with the more troublesome Nazi one.

The Mighty Wurlitzer organ continues to belt out the tunes at downtown El Segundo's historic home for silent and classic movies.

A celebration of once forgotten materials.

'Cause the fence start shaking, the earth was quaking.

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

This giant temperature attraction created some giant electric bills.

A monumental cross hides in the trees in Golden Gate Park.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

A rough granite monument marks the spot where Europeans first caught sight of the San Francisco Bay.

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

An enormous artwork that colorfully celebrates over 150 years of US military achievements.

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

The rustic cabin-like decor of this Arts and Crafts-style church reflects the love of nature central to its little-known theology.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

Art in the form of a winding, man made crack in stone.

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.