This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

Illegal drag racing two stories beneath Chicago’s streets.

No one knows how many bodies are in this vault in a Chicago public park.

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

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

First planned industrial community in the United States.

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

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

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

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

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

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

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

A lush green oasis in the middle of Chicago.

Hot Doug's "Hot Dog" Stand.

Hidden on the seventh floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

This old-fashioned confectionary has been family owned and operated for more than a century.

A hot dog stand where the heads are just as hot as the dogs.

This historic hotel invented the chocolate brownie.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The southernmost outpost of the Russian Empire in colonial America.