At a mile long, the Fort Madison Bridge is the largest double-decker swing-span bridge in the world.

This hand-carved wooden carousel in the Story City North Park was built in 1913.

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

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

The World's Largest Bull.

An old town theater converted into a celebration of the hobo legacy.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

Beating out all other concrete competitors, this massive garden feature's pointy hat has earned it a world record.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

The headquarters of the prestigious World Food Prize celebrates the heroes in the fight against hunger, has no cafeteria.

This zombie-themed restaurant stands out in the heart of corn country.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

While there are no actual snakes in the history of this crooked road, there may be a number of dead horses.

Home with Gothic windows featured in a famous painting.

Most comprehensive museum in America devoted to one ethnic group.

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

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

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

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

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

The farm toy capital of the world hosts a museum filled with toy tractors dating back to the late 1800s.