The fifth-longest natural arch in the world, and the longest outside China.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Come for the speed, leave in love with the desert.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A tree bears footwear on the loneliest road in America.

The self-made house sculpture of an outsider artist who named himself "Chief Rolling Thunder."

Singing sand that stands as the final remains of an ancient lake.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

Experience a charming 1930's version of "infotainment."

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

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

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

A local dialect born in the late 19th century is only spoken in this isolated California valley.

The southernmost outpost of the Russian Empire in colonial America.

'Cause the fence start shaking, the earth was quaking.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

The rusting remains of the largest assembled WWII fleet on the West Coast.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

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

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

A ruined hotel with an unlucky history and an eerie present.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.