This grave marks the final resting place of pioneer John Chapman, better known as Johnny Appleseed.

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

The first spinning jail built in the United States is the only one that still turns.

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

This unassuming city park is home to three different types of Native American mounds.

One of two identical monuments marking the sites of military training encampments in Peoria, Illinois.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

Hidden on the 7th floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

Its eclectic exhibits range from the world’s first motorcycle to Luke Skywalker’s Land Speeder.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

A chance to follow in the footsteps of the word's most legendary animator.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

A Bibliophile's Dream.

This museum features the original car used on the Beverly Hillbillies sitcom.

After miraculously surviving a giant flood, the 19th-century nut tree and its offspring are protected with their own tiny park.

The man who was president for only one day and spent most of it asleep.

A celebration of the animation wizard's childhood home and antique railroad memorabilia collection.

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

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

A subterranean haunt where wine and homemade biscottis are always on the menu.

This historic cliffside mansion uses a natural cave for air conditioning.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

The world's largest man-made underground caverns offer unparalleled underwater wonders.