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

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

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

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

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

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

The wooden airship was the largest flying boat ever built.

A stunning landscape of bunkers that once stored chemical weapons.

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

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

Home of Howard Hughes' Spruce Goose.

10,000 flowered plants bloom in the City of Roses.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

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

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

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

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A massive sea stack famous for its appearance in The Goonies.

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

Only known mainland rookery of the threatened Stellar sea lion.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

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