The park is home to the United States's only still-operating Dutch windmill.

The oldest continuously occupied public building in the United States.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

Oddly shaped rock formation, misassociated with a nearby utopian community.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Legends surround this jagged rock formation in the New Mexico desert.

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

Come for the speed, leave in love with the desert.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

Miraculous tree that seems to sprout out of solid rock.

A museum chronicling pioneer life constructed over Interstate 80.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

An obelisk commemorating Lincoln's role in connecting the coasts.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.