The first declared National Monument in the United States.

The rockpile was the founding landmark for the town of Gillette, and is now the home of the region's history.

This playground sculpture of an icon from the past is dedicated to the children of the future.

A giant milk bottle from the 1930s beckons drivers to this diner.

A diorama lover's dream world.

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

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

At this airport "microcinema," you can catch a film before you catch a flight.

This theatre and its amazing marquee harken back to the Golden Age of Hollywood.

No two pieces are exactly the same at Portland's hippo-themed hardware store.

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

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

This garden is dedicated to a Portland cartoonist who specialized in dark humor.

A Portland legend tells of small green archers shooting random passersby with visionary arrows.

The oldest restaurant in Portland serves fiery coffee cocktails and an astounding amount of turkey.

A sculpture of a salmon swimming through a brick building.

Exploring the past, present, and future of blues music.

One of the world's earliest skyscrapers.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

A plaque on the side of a parking garage marks the burial place of a great Ottawa chief.

Hundreds of graffiti artists have decorated this flood-wall on the west bank of the Mississippi River.

A floating museum that was sunk by a flood and left to rot in the tides.

An urban forest overtakes what was the greatest failure of utopic urban housing.

The oldest soda fountain in St. Louis has been serving up treats for more than a century.