The first memorial dedicated solely to the Black troops who fought for the Union.

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.

A hidden oasis just north of Chicago's Chinatown.

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

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.

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

A lush green oasis in the middle of Chicago.

The first home and studio that belonged to the famous architect.

The company moved out of its sprawling headquarters, leaving plenty of traces behind.

In a cemetery full of holy men, mobsters, and haunted graves, among the most remarkable graves an ordinary husband and wife's spinning headstone.

Julia Buccola Petta's body was peculiarly well-preserved when it was exhumed six years after her death.

Burial site of the notorious Chicago gangster.

What may be America's largest classic video game arcade lurks inconspicuously in a Chicago suburb.

The clothes-washing king doubles as a community center with some unusual features, including an aviary filled with finches.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

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

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

The subtle science of a master molecular gastronomist.

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

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

The palatial McDonald's that inspired Wesley Willis.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

In Chicago, a pizza-enthusiast has opened a museum dedicated to the history of pizza.