A reproduction of earth's many biomes.

Chicago’s incendiary role in the labor movement.

Illegal drag racing two stories beneath Chicago’s streets.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Huge abstract sculptures of the Puerto Rican Flag.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

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

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

The park that the Chicago Stockyards built.

This landmark of the Chicago silent film industry may not be in the picture business anymore but it still stands proudly.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The remains of a Rockefeller's lush Italianate estate hidden in the underbrush on the coast of Lake Michigan.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

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

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

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

A beloved Chicago music venue offering cold beer and lots of “Friendly."

The palatial McDonald's that inspired Wesley Willis.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

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

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

A six-story-tall golden pyramid, surrounded by a moat.