The stone circle honors the 19 firemen who perished during the Yarnell Hill Fire.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

A house carved into a rock in the 1940s.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.

This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

When ecosystems collide in the arid Southwest.

Possibly the world's only drive-in movie theater with an attached motel.

The largest self-built castle in the U.S., six decades in the making.

This amazingly preserved Gold Rush town is a historian's dream.

A classic carnival ride that was carved to be untouchable.

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

Boats and fish both find their way through this massive hydroelectric structure.

The Columbia Gorge Hotel sits as a beacon in the Columbia River Gorge and is also said to be haunted.

In Washington's Yakima Valley lies a town "where dinosaurs roam."

Perhaps the world's only gas station inspired by a political scandal.

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

One of the northernmost occurrences of western juniper can be found in the sand dunes of Washington's Palouse.

Site of a tragedy on the Oregon Trail.

A stunning landscape of bunkers that once stored chemical weapons.

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.

The only Native American museum along the Oregon Trail, run by the peoples who have lived on the land for generations.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.