The drama of nature in full effect in this Nevada State Park.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

The only diamond mine in the world where you can keep what you find.

Dig for your own trilobites in this goldmine of invertebrates.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

Everyone remembers Laurie Strode from Halloween, but this is the house where most of the blood was shed.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

These aggressively sustainable art homes look like something out of 1970's science fiction.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

When ecosystems collide in the arid Southwest.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

European castle ruins in an American state park are actually the product of death and grief.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

An homage to everyone's favorite prehistoric cartoon family.

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

This charmingly homemade amusement park has been growing for 40 years.

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

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

Oregon's unexpected high desert, displaying layers of time in a colorful show.