A crumbling Beaux Arts monument to the Bay Area's age of rail.

Collective dedicated to restoring steam engines.

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

Antiques by the Bay.

Radioactivity still cause for concern at this urban explorer's paradise.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

Location of the most powerful laser in the world, and the potential birthplace of tiny stars.

The black lab that was voted mayor of a California town is forever remembered by a life-size statue.

If you are looking for a used Russian battery, Chinese Ham Radio or other electronic oddities this Flea Market is a good place to start.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

The longest burning light bulb in the world.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

One of the best absinthe distilleries in the United States.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

Michael Heizer's masterwork in the Nevada Basin.

Decommissioned experimental solar facilities that pioneered solar energy technology.

Abandoned Air Force base that has fallen into disrepair.

A picture-perfect town, perfect for blowing up.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Secret US military film studio in the Hollywood Hills.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

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

Abandoned anti-ballistic missile base.