An abandoned convention space that has been left to the homeless and the radical.

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.

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.

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.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

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

This old mining town, deep in the California desert, has a year-round population of one.

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 1920s-era stretch of cabins now overshadowed by the 66 Motel.

A long-vacant Scottish Rite temple in Hollywood has been converted into an art museum filled with Masonic relics.

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

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

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.

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.

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

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

These cinderblock farmhouses were actually World War II radar stations in disguise.

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

This abandoned boat was left in place thanks to its rotting beauty.