This former coal gasification plant found a curious second life as a popular public park.

A wall of chewing gum moonlights as collective art.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A museum dedicated to the history and exploration of both popular music and science fiction.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

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

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

A memorial for the mustachioed record-setting runner.

The only house in Oregon designed by the famous architect, Frank Lloyd Wright.

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

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

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

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

This natural marble cave is one of only five national monuments in Oregon.

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

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

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

This nature center has one of the largest collections of native raptors in the Pacific Northwest.

This sandstone mansion was the home of two of Oregon's most important pioneers.

Where Nor'easters go to die.

A vertically floating hemlock controls the waves and weather at Crater Lake.

Two massive rock outcroppings on the Oregon coastline.

Portlandia is the second-largest copper repoussé statue in the United States.