One of the last functioning antique elevators in Chicago.

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

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

These mansions date back to Chicago's days as a brewer's paradise.

Where old school Polish Chicago and young hipster Chicago live side by side.

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

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

The 606 is a decade in the making.

Where Cusack's record store from the film "High Fidelity" was located.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

These pretty kitties killed and ate as many as 135 railway workers.

First planned industrial community in the United States.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

The beloved home to all publications indie, erotic, and punky.

Cemetery featuring rare glass-fronted columbarium.

Former meatpacking facility turned vertical farm and sustainable business complex.