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

The capitol city's oldest existing cemetery.

Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

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

Abandoned landscape once home to "the world's largest winery."

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

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

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

A fake town founded by Western movie stars is now becoming a hip desert community.

Abandoned Air Force base that has fallen into disrepair.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Abandoned anti-ballistic missile base.

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

Remains of a Greek freighter trapped off of Rocky Point in 1961.

World War II-era Nazi compound nestled in the Santa Monica hills.

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

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

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

Abandoned hotel with adjacent lake and golf course.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

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