Eons old volcanic activity created one of the most stunning rock formations in the United States.

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

The liveliest ghost town in the state.

The ghost town that ended up on Ebay.

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

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

A museum dedicated to a sea that should have never been.

One of the ghostly stops along Route 66.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

Nationwide network of co-ownership underground catastrophe shelters.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

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

Abandoned hotel with adjacent lake and golf course.

Venue for strange sideshow displays and musical acts.

Resting place of Hollywood's immortals is also site of summer film screenings.

Medical and zoological curiosities for sale.

America's most famous piece of self-built architecture.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

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

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

World's largest collection of serial killer artwork and other macabre exhibits.