This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

Less a museum than a bizarre fantasy world created by artists and engineers.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A place to eat for on-the-run agents and espionage enthusiasts.

Statue dedicated to the star of an old television show.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

A theme park attraction designed to turn your children into LARPers.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

A second generation sun-powered marvel lights up the night.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

The fifth-longest natural arch in the world, and the longest outside China.

A tunnel with windows, so you don't miss out on the impressive views.