The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

This historic steamboat is scuttled just a few hundred feet from where it was built over a hundred years ago.

Sasqu(w)atch out!

The world's last remaining store of its kind.

Only known mainland rookery of the threatened Stellar sea lion.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

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

A large AIDS Memorial Pathway art installation provides a moment for quiet contemplation in this public park.

An abandoned World War II bunker is part of a chain that runs throughout Washington.

A museum dedicated to an elusive cryptid.

A tiny plaque hidden miles into the Washington wilderness is all that remains to honor a shipwreck that left 18 people dead.

The only surviving piece of a submarine said to be the most decorated vessel in U.S. history.

A rare tour of a commercial jet assembly plant, held inside one of the largest buildings in the world.

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.

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

Remnants of a forgotten 1920s speakeasy and Prohibition-era murals were discovered in its basement.

Walking by this fence is like strolling along a portal to various fictional worlds.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

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

This three-story antique market and curiosity emporium claims to be "the largest singly owned antique shop in the Pacific Northwest."