This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

San Diego's most historic and haunted home.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

Abandoned Air Force base that has fallen into disrepair.

Abandoned anti-ballistic missile base.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

This impressive tunnel was dug entirely by hand over the course of 36 years.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.