The park is home to the United States's only still-operating Dutch windmill.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

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

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

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

The palatial McDonald's that inspired Wesley Willis.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

Illegal drag racing two stories beneath Chicago’s streets.

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

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

Where Cusack's record store from the film "High Fidelity" was located.

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

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

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

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

One part local history, 99 parts gruesome haunted house.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A monument stands at one of the starting lines of the Trans-Canada Highway, formerly the longest uninterrupted highway in the world.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.