Oregon's unexpected high desert, displaying layers of time in a colorful show.

An old World War II hangar holds 20 vintage aircraft and the rare opportunity to take a ride in a 1940s warbird.

The world's last remaining store of its kind.

Bridges, terraces, and replicas of historic structures all built of rock and petrified wood by one man.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

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

A sculpture of a salmon swimming through a brick building.

It was once the base for a series of domestic terror attacks.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

Look closely and you’ll notice that the color changes a third of the way up the tower.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

There’s a hidden military meme engraved on the World War II Memorial.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Is this the most Portland place ever?

This sandstone mansion was the home of two of Oregon's most important pioneers.

Home of Howard Hughes' Spruce Goose.

The wooden airship was the largest flying boat ever built.

A blacklight journey through a celestial art exhibit.

A museum dedicated to the alleged Roswell Incident.