One of the world's earliest skyscrapers.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Built in 1869, this now-retired structure looks more like a medieval fortress than a county lock-up.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

This lagomorph-obsessed Route 66 emporium is home to a giant jackrabbit that sits in a bunny graveyard.

This diner serves Route 66 nostalgia and what it claims is the 'original' hot dog on a stick.

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

The world's largest covered wagon is piloted by a giant Lincoln lawyer.

This colorful monument commemorates a little-known story from the life of Abraham Lincoln.

Today this bizarre rooftop phone booth seems like a piece of kitsch but it was once used to spot disastrous storms.

While he no longer has an eatery to give him context, this off-brand Paul Bunyan still holds his giant hot dog with pride.

Eclectic collection of rare and beautiful stones in a historic home.

This historic lavatory leftover features two levels of defecation stations completely without context.

You were once able to challenge a chicken to tic-tac-toe at this park, which is now converted into the Aikman Wildlife Adventure.

The inconspicuous grave of the University of Illinois' first president is just steps from the main quadrangle.

Fragments of a massive unfinished sculpture sit near the main quad of the University of Illinois.

The oldest experimental corn field in America is still creating better ways to grow crops.

The park that the Chicago Stockyards built.

This tiny historic jail along Route 66 is the perfect fit for exactly one criminal and their partner-in-crime.

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.