A retro walk through the history of the tube.

A quarter-scale locomotive wonderland built by one man and his family.

The highest bridge in America was built for an almost unnervingly small amount of money.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Community bookshelf of 25-foot-tall book spines.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

A ghost town originally established and governed solely by Black Americans seeking a place of their own, free from discrimination.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

The largest self-built castle in the U.S., six decades in the making.

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

This memorial pays homage to Pueblo's four Medal of Honor recipients.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

This lesser-known geographic marker was the reference point for all surveys of the continent for 75 years.

A rainbow-colored house promotes LGBTQ rights across the street from the Westboro Baptist Church.

The world's largest collection of the world's largest objects is in one small Illinois town.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The temporary burial site of the man who shot and killed Jesse James.

See six states from the newly restored 100-year-old historic roadside attraction.

Stories of sightless fish and ghostly cowboys are only a fraction of the legends surrounding this Kansas sinkhole.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.