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

A giant Troll lurks under one of Seattle's oldest bridges.

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

The longest continuous lava tube in Oregon.

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

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

Hollowed out cedar log tubs set in an ancient towering forest.

One of the world's tallest, oldest, and most disgusting chocolate cascades.

The world's largest egg has been cracked a number of times over the years but has been repeatedly replaced.

Stroll through a wonderland of stupendous moss-covered trees.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

World's largest porcine hairball sits in a collection maintained by Benedictine monks.

This bridge provides safe passage for squirrels.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

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

Where Nor'easters go to die.

Two massive rock outcroppings on the Oregon coastline.

The largest wooden building in the world now houses a fascinating collection of aircraft.

Home to the only outdoor municipal elevator in the United States.

World's only nuclear reactor operated by liberal arts undergraduates.

This public art piece proves that in Portland even reporting the weather is a thing of whimsy.

Beyond being incredibly fun, not much can be said about the Hole with certitude.