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

42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

A frozen relic of Seattle's hydroelectric boom is now a teaching facility for future engineers.

Couple's personal collection of pinball machines turned public pinball museum.

This contemporary art museum is filled with other, smaller museums, which feature work from artists primarily in the Pacific Northwest.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A sliver of nostalgia in Seattle's Viretta Park.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

The illuminated falls are a gem in North Cascades National Park.

Four abandoned towers hidden above the Douglas fir forest in Washington.

The tiny church offers succor to travelers driving by, but only eight at a time.

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

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

A 14-foot-tall Bigfoot statue stands guard over this café and filming location.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

The oldest attraction in Disneyland is a prehistoric stump that Walt may have bought for his wife.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

A midcentury ranch house hides a literal treasure trove of unique rocks and minerals.