This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

A massive sea stack famous for its appearance in The Goonies.

The longest continuous lava tube in Oregon.

Only known mainland rookery of the threatened Stellar sea lion.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

Mysterious meeting place for UFO hunters near Area 51.

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

An eatery for UFO seekers on the Extraterrestrial Highway.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

The longest living non-clonal organisms on Earth.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A smoke stack so large, the Washington Monument could fit inside!

The only road through the heart of Glacier National Park.

The short oil boom of Venice Beach, and its swift removal from the tourism-laden landscape.

A massive volcanic plug is now a protected area that hosts a number of bird species.

This rock formation named for its unique shape is one of many that call the Alabama Hills home.

The sea once considered an ecological wasteland is now called "crown jewel of avian biodiversity" by scientists.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."

The blinking light atop the iconic landmark has been sending secret messages for decades.