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

Two hula hoops appeared on the tree after a storm, and the collection kept growing.

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

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

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

Remnants of a quarry company town still stand on the banks of the Wapsipinicon River.

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

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

Eight feet in diameter and more than 24 feet around.

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

The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

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

The World's Largest Bull.

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.

Home with Gothic windows featured in a famous painting.

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

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

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

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

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.