The rusting remains of the largest assembled WWII fleet on the West Coast.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

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

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

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.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

Hidden beneath a lake for decades, this brutalist mine has now emerged from beneath the receding waters.

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

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

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

Once a place of peaceful repose, this sanitarium now faces an uncertain future.

An abandoned boat that's been stranded mysteriously for decades.

Once the central jail for Los Angeles, this building housed inmates like Al Capone, those arrested from the Zoot Suit and Watts Riots, and individuals imprisoned for their sexuality.

Abandoned in 2009, this once popular resort destination now stands frozen in time.

This mysterious and creepy location instills a strong sense of foreboding in all visitors.

The stone walls of a home built to withstand a California wildfire still stand after more than a century.

This stately structure has been abandoned for half a century.

A lawless town deep in Death Valley was famous for its riches and death rate.

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

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

Salt is slowly eating away this abandoned saltworks town in the desert.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

The overgrown ruins of a once thriving World War I-era copper mine.

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