World's largest collection of serial killer artwork and other macabre exhibits.

A huge musical instrument played by the ocean.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The magazine keeps a perfectly groomed display garden for its photo shoots.

The highest point in Iowa, while not that impressive to mountain states, has earned its own monuments.

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

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

The World's Largest Bull.

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.

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

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

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

Home with Gothic windows featured in a famous painting.

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

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

This spot in St. Louis, marked with a simple sign, has seen more pro baseball than just about anywhere else in the world.

A kitschy, creepy St. Louis mainstay.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

A cave 150 feet beneath Kansas City is the perfect climate for growing 10,000 delicate orchids.