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

Spectacular volcanic cliffs along the Crooked River invite hiking, rock climbing, and photography.

An attractive free-plunge waterfall outside Bend in the Deschutes National Forest.

A sprawling cave network created by a lone lava tube.

The world's last remaining store of its kind.

Atop an active stratovolcano, two lakes separated by a narrow strip of land.

Version of the French Riviera destroyed by the sea.

A large, historic railroad trestle over the Columbia River is now open for non-motorized traffic.

Over 75 historically themed murals grace the walls of a small Washington city.

Perhaps the world's only gas station inspired by a political scandal.

In Washington's Yakima Valley lies a town "where dinosaurs roam."

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

A stunning landscape of bunkers that once stored chemical weapons.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

An obscure waterfall that looks like something out of a fantasy novel.

A wonderful museum on the site of the historic Black Bear Mine on the back of Red Mountain.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

One of the northernmost occurrences of western juniper can be found in the sand dunes of Washington's Palouse.

The strange phenomenon causing gravity to "work backwards" on this hill has been blamed on the paranormal.

The only undammed section of the Columbia River in the United States has been preserved, ironically, by its proximity to the Hanford Nuclear Reservation.

Nuclear reactor created the plutonium used on Nagasaki.

One of two observatories in the U.S. that routinely detect gravitational waves.

The sail of the first nuclear sub to circumnavigate the world.

A 1940s nuclear reactor built to produce plutonium for the Manhattan Project.