The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

An abandoned monastery sits on a far-off island in the Adriatic Sea.

The murals have transformed a residential alley into a vibrant drive-through gallery.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

The palatial McDonald's that inspired Wesley Willis.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

To find the "unicorns of the deep" you've got to go downstairs.

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

This small, but long-running hobby club has built one of the largest model rail lines in the US.

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

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.

First planned industrial community in the United States.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A display of magnificent stained glass windows is the first exhibit of its kind.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This historic hotel invented the chocolate brownie.

An antiquated German apothecary on Chicago's North Side.

A lush green oasis in the middle of Chicago.

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

A monument to the art of slicing people open.