A Museum of Holography frozen in 1974.

This historic house museum that celebrates one of the world's most influential social reformers is also one of the most haunted locations in Chicago.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

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

A former atom smasher turned into an art gallery.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

Honoring Italian greats from Joe DiMaggio to Rocky Marciano.

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

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

A lush green oasis in the middle of Chicago.

Inside the center are Italian works of art and a replica model of St. Peter's Basilica.

An avant garde art museum at the University of Chicago.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.

First planned industrial community in the United States.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

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

A theater sits abandoned on Roosevelt Road, once majestic in splendor, now majestic in decay.

Former meatpacking facility turned vertical farm and sustainable business complex.

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

One of the finest examples of a black soil prairie that was barely saved by the Great Depression.

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

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