An optical illusion found amid a logged redwood forest.

A ruined hotel with an unlucky history and an eerie present.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

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

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

San Francisco's newly reopened hands-on science museum.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

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

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

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

A one-of-a-kind collection of a unique medium.

A 140-year-old castle with underground caves hidden in San Francisco.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

The remains of the first punk club in L.A.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

World-famous, Pink's still manages to keep its prized cult fetish status.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.