This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

This graffiti-covered bridge is the quintessential vision of a place for disillusioned youth to escape the complexities of burgeoning adulthood.

Spiral labyrinth hidden in the hills above Oakland, CA.

Seven ceramic sculptures are scattered around this California college campus.

This museum boasts the ninth-largest collection of insects in North America.

This corn maze so big you may want to pack a lunch, and possibly a flaregun.

Outsider art or homage to aliens?

Special tunnels built so that frogs won't be killed when crossing the highway.

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

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

An extensive collection of ancient Egyptian artifacts and mummies.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

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

A popular tourist cave with a dark past.

The huge granite obelisk that towers over a small California town.