Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

The highest point in Washington state is a volcano covered in glaciers.

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

A wall of chewing gum moonlights as collective art.

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.

After this former brothel closed, its interior remained almost frozen in time.

Three generations of intrepid collectors display their curious artifacts in a homemade museum right next to the caves they discovered.

The fifth-longest natural arch in the world, and the longest outside China.

A house carved into a rock in the 1940s.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

Singing sand that stands as the final remains of an ancient lake.

A classic carnival ride that was carved to be untouchable.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

Dubbed the "Blade Runner dragon," this buzzing neon sign is a beloved local icon.

This perfectly preserved Chinese medicine shop was untouched for decades before being reopened as a museum.

Home to a timed geyser created by complete accident.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

This giant slab of driftwood marks the beginning of the Winnemucca to the Sea Highway.

Home to the deepest rift anywhere on Earth.

The largest outdoor art gallery in the Northwest United States.