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

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

This awkward aquarium sculpture is one of the strangest statues in Chicago.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

To find the "unicorns of the deep" you've got to go downstairs.

Where dioramas can follow you home.

Years of archaeology, just chillin' by the water cooler.

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

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

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

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

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

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

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

The sign to a demolished amusement park now stands in front of a local library.

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

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

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

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

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

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

A military museum and library dedicated to the citizen soldier.

Chicago’s incendiary role in the labor movement.