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

A ring of creosote bushes that are estimated to be 11,700 years old.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

A lawless town deep in Death Valley was famous for its riches and death rate.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

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

"Only the devil could play golf here."

Decommissioned experimental solar facilities that pioneered solar energy technology.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

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

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

Where decommissioned airplanes and helicopters go to become part of Hollywood.

Hundreds of trees made from glass bottles make up this forest on Route 66.

Built by one man in the '20s, this site is now a museum representing the Great Basin cultures.

Thousands of turbines whir at at the origin of North American wind power.

Everything you always wanted to know about borates is here.

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

Abandoned hotel with adjacent lake and golf course.

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

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

A mountain range on an active U.S. Navy base hides thousands of mysterious prehistoric rock carvings.

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

This sun-scorched lakebed contains samples of half the natural elements known to humankind.

This impressive tunnel was dug entirely by hand over the course of 36 years.