Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

Don't blink or you'll miss it.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

The first of the iconic American roadside attractions lives on as a college mascot.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

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

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

John Wayne, Ronald Reagan, and other Hollywood actors have resided in this picturesque Route 66 hotel.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Half of a house.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.