This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

A stealthy Apache hideaway that became the haunting site of a mass grave.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A self-built castle made by a mysterious man.

The ruins of the castle that chemicals built.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

An entertaining journey through the odd and strange awaits visitors to this shop.

Rusty pieces of metal jutting out of a breakwater are all that's visible of the 12,500-ton ocean liner that capsized just off the beach.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

The state's only comprehensive museum dedicated to the mineral that defined its history and economy.

Outsider Art Community.

A spiritual vortex among the red rocks in Sedona.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

Acres of natural wonders left behind by a socialite-turned-gardener.

Cambria's most unique B&B features creative surroundings and fantastic food.

A house built from trash known as the poor man's Hearst Castle.

A stellar example of Art & Crafts architecture, and a movie set to boot.

Originally the home of chewing gum mogul William Wrigely Jr, it is now the official offices of the Tournament of Roses.

A rare surviving example of a pre-WWII Japanese garden, restored after years of neglect.

The cobbled together compound of a deceased artist which now serves as a filming location.

Once a place of peaceful repose, this sanitarium now faces an uncertain future.