This museum glorifies the humble potato.

This striking art museum holds an amazing series of curiosity cabinets.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

The watery grave of an impractical idea.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

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

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

These machines have been collecting dust for decades.

Tens of thousands of tiny birds swarm into one school chimney every fall.

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

The magic's in the hole!

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

Former bath house turns gastropub.

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

A beautiful 62-acre Catholic shrine and botanical garden.

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

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

Tiny horses tethered to antique rings are scattered around the city.

Activists are fighting to preserve these unfinished highway ramps as a tribute to the citizen revolt that halted their construction decades ago.