This residential door allows San Francisco muggles a glimpse at the wizarding world.

No matter what it might seem like on film, most scenes filmed on a plane are filmed at this LA studio.

World War II-era Nazi compound nestled in the Santa Monica hills.

Acres of natural wonders left behind by a socialite-turned-gardener.

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

One of the ghostly stops along Route 66.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

The ghost town that ended up on Ebay.

The unbelievably opulent home built for an infamous newspaperman.

One of the last free public hot springs is decorated with hippie art.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

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.

This 19th-century church is now a popular roller rink.

The remains of a ruined mansion memorialize the 1906 earthquake.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

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

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

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

Canyon walls shrouded in ferns.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.