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

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

A crumbling wizard is one of the final reminders of a roadside Middle Earth.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

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

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

The remains of a deserted steamboat sit rusting beside an old ferry pier and an abandoned train platform.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

An abandoned Cold War missile radar site.

A pier that used to act as a busy ferry dock is now a decaying favorite of local fisherman and urban artists.

An abandoned car and strange wooden debris are among the scattered remains of the old sand and gravel quarry.

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

An abandoned convention space that has been left to the homeless and the radical.

Its buzzing collection honors vibrator history.

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

The final resting place of the Emperor of the United States and Protector of Mexico.

Visible below the waves are memorials to the city's Gold Rush dead.

Oakland's beautiful monumental cemetery.

Haunting and beautiful trees, doomed to die.

A 300-ship graveyard, with a few still visible at low tide.

A vast city of the dead, where the deceased outnumber the living by more than a million.

The restored and active Victorian-era final resting place of San Francisco.

A Mysterious Masonic tomb in San Luis Obispo.