This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

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

One of the most unusual geological features, recognizable from a dozen hit movies.

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

A 1950s Googie burger stand is now a Los Angeles landmark.

The liveliest ghost town in the state.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

A downtown park built on top of unclaimed graves.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

In a dry, neglected cemetery lies the unassuming grave of a soldier vilified in life but celebrated in death.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

A magnificent, reportedly haunted mansion built for a composer by Spiritualists.

This historic graveyard was partially paved over to create a streetcar line.

San Diego's most historic and haunted home.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Medical and zoological curiosities for sale.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

"The Hoppiest Place in the World" holds the world’s largest collection of bunny memorabilia and is a singular testament of a couple's devotion to all things Leporidae.

Explore an early California pioneer's rancho hidden in LA's manufacturing hinterland.

This graveyard is the eternal home of the residents of a vanished California town.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.