This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.

Home to the "Circus" trees created by Axel Erlandson.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

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

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

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

Bits and pieces from the ill-fated Donner Party's winter cabins.

This municipal playground was co-created by the father of one of the most playful characters ever.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

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

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

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

An extensive collection of ancient Egyptian artifacts and mummies.

The headquarters of a secretive order is also a beautifully-designed park.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.