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.

Abandoned Air Force base that has fallen into disrepair.

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

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

This abandoned motel doesn't welcome guests anymore, but decay and a creepy atmosphere still call it home.

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

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

Secret Manor, a house full of legends, the least of which is the haunting of long-deceased ladies of pleasure.

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

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

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

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.

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

A ghost town originally established and governed solely by Black Americans seeking a place of their own, free from discrimination.

This little gem of Spanish Colonial architecture has been abandoned since the 1950s.

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

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

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

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

An abandoned Cold War missile radar site.

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

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

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