Hidden on the 7th floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

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

Small and slightly hidden, the American Writers Museum is preserving the legacy of America's finest authors.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

Illegal drag racing two stories beneath Chicago’s streets.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

A curious collection of miniatures in a quiet corner of the Chicago Children's Museum.

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

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

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

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

A century-old network of freight tunnels underneath the city's historic business district.

The palatial McDonald's that inspired Wesley Willis.

The 30,000-volume library is one of the world's most impressive poetry collections.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

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

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

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A military museum and library dedicated to the citizen soldier.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

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

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

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

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