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

Whiskey lovers, this is your happy place.

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

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

The site of murders and Satanic cult gatherings.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Potential high level nuclear waste storage site for the next 10,000 years and beyond.

Odd outsider art installations surround a Gold Rush-era ghost town.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

A bomb shelter and some fireplaces are all that remain of the house Fred Roberts tried so hard to keep standing.

This temple, built by an eccentric religious leader before his death, sits guarded and in ruins.

Hidden beneath the streets of London is a secret subway that only carried mail.

Are these prehistoric metal pipes evidence of alien plumbers? Nope, but they are amazing nonetheless.