The most unique castle in all of Southern California, entirely constructed from repurposed materials.

This abandoned subway station can still be seen on regular commuter trips.

One of the ghostly stops along Route 66.

The liveliest ghost town in the state.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

Its buzzing collection honors vibrator history.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

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

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

Home of what was the largest hydraulic mine in the world, producing gold and the first diamonds in the U.S.

Get up close to emus and ostriches, or buy their tasty meat.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

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

This graffiti-covered bridge is the quintessential vision of a place for disillusioned youth to escape the complexities of burgeoning adulthood.

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

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

A ruined hotel with an unlucky history and an eerie present.

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

The abandoned personal amusement park of the King of Pop.