The second-largest giant sequoia in the world.

A real-life homage to the Rachel McAdams and Will Ferrell's fictional Eurovision musical duo.

Once the center of power for the region's various factories.

An actor's tribute to a former mentor.

The first plantation museum in the United States to focus on the lives of enslaved people.

This square in downtown Eugene is dedicated to the novelist and countercultural figure Ken Kesey.

A mile-long audio-guided walking tour preserves an iconic era of Portland soul music.

Post office plaque commemorates local resistance to a cult invasion.

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

Make it an offering.

A statue of the owner stands outside of this museum, once the most popular brothel in town.

The steepest tramway in North America provides stunning views of the out-of-the-way Wallowa Mountains in northeastern Oregon.

Formerly secret, precariously perched boulders.

This perfectly preserved Chinese medicine shop was untouched for decades before being reopened as a museum.

Atop an active stratovolcano, two lakes separated by a narrow strip of land.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

No one knows how many bodies are in this vault in a Chicago public park.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

A beloved Chicago music venue offering cold beer and lots of “Friendly."

A hot dog stand where the heads are just as hot as the dogs.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

All of Chicago's wood-paved streets are long gone but two alleys remain.