America's first National Historic Landmark is a 100-foot tall obelisk and gravesite dedicated to the only casualty of the Lewis & Clark Expedition.

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

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

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

A mysteriously dark cemetery monument fuels stories and legends galore.

A single artist is behind these large-scale models made of hundreds of thousands of two-inch wooden matchsticks.

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

Home with Gothic windows featured in a famous painting.

Nature and art meet in this curvy creation

Walk in the footsteps of the famed astronaut at Purdue University.

This bridge was constructed from the remains of the first Ferris wheel.

Display that gathers the basic elements of the universe in one convenient location.

The body of one of the world's most famous outlaws is covered in cement and iron to prevent it from being stolen.

Ruined pieces of stone and a swimming pool are all that remain of an amusement park swept away by a flood.

At 431 feet and 10 inches, this is the longest historic covered bridge in the United States.

One of the last remaining covered bridges in the region.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

You thought Santa Claus didn't exist, but it turns out you were wrong.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

This unassuming home was once “grand central station” for the Underground Railroad.

A rural hall of justice holds the world's only comic book and superhero museum.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

This candy shop has been serving up sweets to the Louisville area since the 1850s.

The longest navigable underground river in the United States is home to countless blind and albino animals.