The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

Center filled with hands-on displays served as a tribute to several astronauts with connections to the state.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

A real flying saucer, contracted by the U.S. Air Force.

What was once the largest NFL stadium.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

These massive mitts are made of 30 tons of devotional bronze.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Pizza with a side of fine art.

Hot Doug's "Hot Dog" Stand.

Home to a protest movement, a bombing, and a dramatic change in labor history.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

The largest earthwork effigy in the world.

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

One of the few surviving "Wigwam"-themed motels.

A pharmacy built in the shape of a mortar and pestle, now resembles a fancy cocktail.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

This museum remembers an apocalyptic cult that became more famous for baseball than religious radicalism.

The only surviving prototype for Buckminster Fuller's house of the future.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.