A collection of 20th-century automata, penny arcade games, and musical contraptions.

San Francisco's newly reopened hands-on science museum.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A winding path built in secret on the edge of the continent.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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

The wooden airship was the largest flying boat ever built.

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

Home of Howard Hughes' Spruce Goose.

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

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

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

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 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.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

The magic's in the hole!

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

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

A "Minnesota-style" pizza parlor in the Scandinavian heart of Seattle.

Once a year, thousands of naked cyclists flood the streets of a Seattle neighborhood.

A community gathering place that once housed half-ton tanks and the World's Fair.