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

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

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

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.

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

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

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

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

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

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

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