10,000 flowered plants bloom in the City of Roses.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

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.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Norway's oldest cathedral still in use.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Walk 2,300 feet above the ground on the "Troll's Tongue."

Home to three historic ships from the age of Vikings.

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

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

A walk through the historic city center, under the streets of Seattle.

An institution that preserves the history of institutionalization.

Only known mainland rookery of the threatened Stellar sea lion.

100-year-old shipwreck you can walk up to at low tide.

The magic's in the hole!

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

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

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