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

A fine, large-aperture telescope available for public use.

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

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

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

World's largest Christmas store.

Week-long festival in the baby food capital of the world.

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

Only known mainland rookery of the threatened Stellar sea lion.

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

This famous bridge twisted itself into oblivion, but not for the reason you might think.

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

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

A wall of chewing gum moonlights as collective art.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A heavenly experience, right here on Terra Firma.

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

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

Stroll through a wonderland of stupendous moss-covered trees.

100-year-old shipwreck you can walk up to at low tide.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A stunning landscape of bunkers that once stored chemical weapons.

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

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