Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

This historic estate on the east shore of Lake Tahoe was home to an eccentric millionaire (and his pet elephant, Mingo).

A breathtaking 19th-century trail overlooks Lake Tahoe.

A vertically floating hemlock controls the waves and weather at Crater Lake.

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

This nature center has one of the largest collections of native raptors in the Pacific Northwest.

Forever immortalized in concrete, this Simpsons etching was crafted by show creator Matt Groening.

Inside a humble hangar is some of the best roller derby the world has to offer.

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

The magic's in the hole!

A sliver of nostalgia in Seattle's Viretta Park.

Boise State's stadium was the first non-green football field in the world.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Inside this store, a mysterious statue draws visitors from the world over.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A cave's rare beauty held a cavernous secret hidden underground.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A museum dedicated to the alleged Roswell Incident.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

No Gordon Lightfoot song, only a barebones monument to greed.