This unassuming city park is home to three different types of Native American mounds.

This baseball diamond was home to the Rockford Peaches, a team featured in the hit film "A League of Their Own."

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

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

A 30-foot man on a penny-farthing bicycle rides along the banks of the Mississippi.

Lined with plaques and tributes to veterans, this patriotic street was founded by Mexican immigrants.

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

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

The Iowa state contender for largest pan in the world oddly only comes in second or so.

The notorious couple camped at this site after a bloody shootout with police.

The World's Largest Bull.

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

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.

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

An experimental, automotive replica of Stonehenge.

This erect, phallic geological spire wasn't always named so domestically.

A small Wyoming town is home to the state's oldest-operating soda fountain.

The world's largest sticker ball weighs in at a mighty 231 pounds.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

Population: 1.

This Wyoming town is fascinated by a particular mythical creature.

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