A Depression-era sculpture by Charles Umlauf survives in a small suburban post office.

These Depression-era WPA sculptures have made a couple of stops over the years.

Tiny treasures, giant murals, and strange sculptures decorate the windows and doors of this abandoned building.

The empty tomb that houses the memories of Roy Bertelli's revenge.

The remnants of Peoria's proud baseball past stand slightly abandoned, but not forgotten.

Twice a year, this road is closed off to allow for the migration of thousands of snakes, reptiles and amphibians between cliffs and a swamp.

Burial mounds of prehistoric Native Americans who lived along the DuPage River.

This small-town park in southern Illinois has a 1,000,000-gallon swimming pool and a 100,000-barrel oil well.

A source of civic pride, though the reason for its construction is unknown.

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.

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

This baseball diamond was home to the Rockford Peaches, a team featured in the hit film "A League of Their Own."

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

A long lost multi-cultural music venue used to reside in the bottom floor of Chicago's Flat Iron Building.

This historic store hides a museum exhibiting a shoe-sizing x-ray machine and a pair of kicks that once belonged to the world's tallest man.

Parking lot where a Chicago mayor was inaugurated under very sketchy circumstances.

The faint remains of a Polish news empire still linger.

Pumpkin-like gargoyles and grotesques peer down from the rooftop of this unassuming apartment building in Illinois.

One of the largest carillons in the world, this giant instrument has 67 cast-iron bells played by a keyboard.

Landmark Chicago building narrowly avoided destruction.

Abraham Lincoln's likeness rests at the top of this giant totem pole.

The study has wall paneling from a 17th century ship.

The park that the Chicago Stockyards built.

This former nursery supplied plants for the creation of Chicago's largest park.