Two graffiti towers stand like ghosts of Vancouver's World War II-era defensive outpost.

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

A high point in Vancouver kitsch.

The victims of a free-floating Japanese bombing during WWII are remembered by this stone monument.

An old World War II hangar holds 20 vintage aircraft and the rare opportunity to take a ride in a 1940s warbird.

Portland had a unique approach to Cold War-era protections.

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

Massive crater in central Oregon.

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

The seamy, underground secrets of Portland's criminal past.

The second tallest railway trestle bridge in America.

City Council meetings still happen in this historic building, impeccably preserved on the inside.

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

Mysterious ancient petroglyphs carved on a glacial boulder at the tip of Bainbridge Island.

An abandoned 19th-century hospital now swirling in ghost stories.

This monument remembers the first Japanese Americans forcibly relocated during World War II.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

The century-old remains of an abandoned farm town in eastern Washington.

Train debris from the deadliest avalanche in United States history can still be found in the ravine where so many perished.

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

A nearly abandoned 19th-century town on the Palouse.

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

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

This dilapidated ship carcass covered in trees is a striking sight.