A house carved into a rock in the 1940s.

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

Surprisingly Delicious Asian-Style Hot Dogs.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

Elevated freight railway turned wildly successful urban park.

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

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

Home of Howard Hughes' Spruce Goose.

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

Between Missoula and Spokane, a family-owned travel center has an unusual museum in the back.

A classic mystery spot complete with spots that are said to make you shrink or grow when you stand on them.

The only road through the heart of Glacier National Park.

This oddity shop contains everything from antique tools to a human skeleton.

A wild west land agreement was etched right onto this historic Idaho stone.

Sweet Willy, at 30 feet tall, is the world's biggest beagle.

Over 75 historically themed murals grace the walls of a small Washington city.

Tasked with beautifying a disused stretch of industrial land one artist filled a hole with grass.

The small town of Poulsbo in Washington state is the next best thing to the Kingdom of Norway.

Site of the greatest known waterfall that ever existed.

Seattle's super-sized cowboy apparel once belonged to a themed gas station that wrangled in herds of tourists.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.