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

At a rest stop north of Seattle, the trunk of an ancient tree.

A famous hotel houses an impression collection of mini dioramas and giant doll houses.

Seattle's own bad art museum located inside Cafe Racer.

You might recognize this historic Oregon mansion from its appearance in 'The Goonies.'

A Roman-style column in Oregon hides a spiral staircase inside.

The wooden airship was the largest flying boat ever built.

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

The magic's in the hole!

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

An ice cream parlor chain that caters to vegans and pinball fans equally.

Cave carved out of a huge snow drift collapsed killing one and injuring five in July 2015.

A short hike into the mountainside forest reveals a decaying 1890s town.

Spectacular views await visitors to this lake.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

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

Site of the greatest known waterfall that ever existed.

People come from across the globe to swim in this lake believed to have healing properties.

This metallic stampede sits frozen on a Washington ridge yet the artist's vision is still incomplete.

The last surviving footbridge in the Yakima Canyon, now a historic landmark, provides access to wilderness west of the Yakima River

An outsider art duo's yard has been turned into a whimsical public gallery.