One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

This strange hill on Old Fort Road where gravity works in reverse has been fascinating locals for years.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

The last SR-71 ever constructed.

In 1952, this restaurant began selling the Colonel's “secret” recipe.

A tribute to the Nirvana frontman hides beneath the bridge that was the singer's beloved hangout spot.

This Cold War missile launch site has been abandoned for 40 years.

The highest point in Washington state is a volcano covered in glaciers.

This public art piece proves that in Portland even reporting the weather is a thing of whimsy.

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

Not-so-fearsome tiny trolls live under this wooden train trestle in Portland.

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.

This frequently-photographed waterfall takes only a short hike to visit.

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.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

Visitors come from all over to bring gifts and tokens to the grave of Alice, who is thought to have died of a broken heart.

This tiny chapel next to a highway provides weary travelers a place to rest, pray, or maybe even get married.

This bare tree might not have leaves but it is constantly clothed in festive decorations left by mysterious local benefactors.

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

After covering almost 1.5 billion acres, the survey's still not finished.