Odd outsider art installations surround a Gold Rush-era ghost town.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

A hotel and restaurant serving as the mecca of kitsch.

Towering basalt columns, a creation of fire and ice.

A popular tourist cave with a dark past.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

A 300-ship graveyard, with a few still visible at low tide.

A strange house built only at night, with rumored mystic inspiration.

A free, public museum dedicated to the fascinating science of sight.

An vast warehouse of everyday treasures in Berkeley, CA.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Antiques by the Bay.

Historical trolley restoration and operation at History San Jose, Kelly Park.

Private collection of art inspired by cabinets of curiosity.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

San Francisco Bay's ghost town.

Successful artist residence program has filled this ranch with dozens of sculptures over the years.