Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

This quiet park's strange sedimentary spires were named after Kodak's color film.

Colorado's only true geyser is hidden within the San Juan National Forest.

A house built from trash known as the poor man's Hearst Castle.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

One of the first skyscrapers in Santa Monica, and a famous getaway for the Hollywood elite of then and now.

Concrete strongholds stand guard over the Golden Gate.

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

A museum dedicated to the history and art of staying clean.

The highway's southernmost spot is a beloved local attraction.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

This extinct shield volcano is the lightning rod of the Cascades.

Stairs often replace streets on the steep slopes of this old mining town.

Hike amid the palm trees that thrive among Southern California's Indio Hills.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.

The wooden airship was the largest flying boat ever built.

Inky sludge oozes to the surface of this beach thanks to a rare natural tar seep.