The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

A monument to a Native American leader who was known for never breaking a promise and met his end after signing a deal with white settlers.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

The legacy of an unsolved, gruesome murder rests beneath the spans of this historic bridge.

The world's largest collection of the world's largest objects is in one small Illinois town.

The longest structure of its kind ever built in Michigan.

A memorial to the Potawatomi chief who allegedly ran nearly 150 miles to alert settlers of an impending attack.

One of the world’s largest living advertisements is made out of pine trees.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

The largest earthwork effigy in the world.

This shop is named for a runaway elephant who smashed through its doors, stole some peanuts, and spent five days on the lam.

A county library in rural Ohio houses one of the finest mineral collections in the world.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

The headquarters of a pioneering cast iron and cast aluminum cookware company is in ruins, but still standing.

The large rock formation where the Shawnee prophet Tenskwatawa stood and encouraged his warriors during the Battle of Tippecanoe.

A miniature world of concrete and stone in Springfield, Ohio.

Historians and hobbyists head to this former French outpost for the annual Feast of the Hunters' Moon.

One of the largest collections of holy relics in the country.

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

Tombstones carved to look like tree trunks are used for multiple generations of family members.

One of the first historical sites of an alternative universe was installed in the town of Paris, Illinois—which is now home to an annual spelling bee of Kcymaerxthaereal words.

An unknown number of cholera victims are buried in two nondescript graves.

In a grove of fast growing walnut trees outside Paris, Illinois, a marker shares the story of a fictional road building culture.