A permanent open-air exhibition of stunning, and inherently American, public art.

"Polynesia on the Plains."

The shortest river in America flows for just 201 feet.

Between Missoula and Spokane, a family-owned travel center has an unusual museum in the back.

Cross the Continental Divide through an old railroad tunnel, and ride back to the top on a shuttle.

The mayor made the declaration in 2004.

A narrow fjord-like lake, the third-deepest in the United States, runs for over 50 miles into the Cascades of Washington state.

A stunning landscape of bunkers that once stored chemical weapons.

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

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

This coastal rock formation resembles a churning cauldron at high tide.

The wooden airship was the largest flying boat ever built.

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.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

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

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

The original span of a high bridge across the deep Crooked River Gorge has been preserved for pedestrian use.

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

Fifty years after a “blast blasted blubber beyond all believable bounds,” this idyllic natural area commemorates the carnage.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

Rushing water plunges over a 100-foot drop created by an ancient lava flow at this majestic waterfall.

The ruins of a failed dam that was built over land later described as a "sponge."

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