An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

A Museum of Holography frozen in 1974.

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

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

Where dioramas can follow you home.

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

Illegal drag racing two stories beneath Chicago’s streets.

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

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

An eccentric park and pool.

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

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

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

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

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

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

An avant garde art museum at the University of Chicago.

The 606 is a decade in the making.

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

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

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

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

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

These abandoned grain silos and tunnels are an urban exploration dream.