One of the largest aviation events in the world brings half a million aircraft enthusiasts to Wisconsin each year.

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

The World's Largest Bull.

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.

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

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.

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

This remote island in Iowa was abandoned after being devastated by flood.

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

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

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

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

The “American Gothic" artist's largest works hang in an Iowa State University library.

The only museum in the world dedicated to the history of sprint car racing, next to one of the country's most historic dirt tracks.

A collection of 1,300 accordions of all shapes and sizes displayed in chronological order.

Gambling, boozing, and yodeling animals cover the walls of this dive bar cum natural history museum.

More than 5,000 contemporary and "historic" mustards from around the world.

Vikings and Evangelicals have both had a hand in this replica medieval church.

This stone memorial commemorates a group of French patriots slain by French fascists.

Journey through the ruins of this ancient Roman temple dedicated to the god of war.

A functioning Roman-era aqueduct and bridge in rural southwest France.