The ghost town that ended up on Ebay.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

Abandoned bridge hidden deep in the San Gabriel Mountains.

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

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

"Looks so real, it's scary!"

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

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Medical and zoological curiosities for sale.

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

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Towering basalt columns, a creation of fire and ice.

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

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

The ghostly remains of an accidental sea.