A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

A fitting attraction for the corn capital of the world.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

When flour explodes, it's not a pretty sight.

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

This little gem of a museum is a hidden jewel filled with prehistoric treasures.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

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

In rural Iowa, an imported 19th-century windmill overlooks an unlikely enclave of Danish culture.

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

Elaborate hand-carved wooden clocks two brothers made in their spare time are on display at this handsome little museum.

No one knows the origin of this small town’s unique name.

This simple home was the beginning of a long journey for the iconic Western film star.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

Lured here by the promise of tens of thousands in gold, Jesse James started a quintessentially American trend of robbing trains in-motion.

Millions of dollars worth of sculpture decorate this Iowa city center.

An eclectic assortment of medieval architecture in a small Iowa town.

The World's Largest Bull.

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

A single artist is behind these large-scale models made of hundreds of thousands of two-inch wooden matchsticks.

Home with Gothic windows featured in a famous painting.