Once known as the Illinois Asylum for the Incurable Insane.

These Depression-era WPA sculptures have made a couple of stops over the years.

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

This simple gravestone remembers a pig who single-hoofedly raised $19,000,000 for the Navy.

In a grove of fast growing walnut trees outside Paris, Illinois, a marker shares the story of a fictional road building culture.

G.V. Black, the Father of Modern Dentistry, keeps an eternal eye on Chicagoan’s teeth from his perch in Lincoln Park.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

Museum dedicated to the art of cutting and polishing stones.

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

This historic-shipwreck-cum-diving-spot can still be seen poking its boiler out of the Lake Michigan waters that claimed it.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

This historic hotel invented the chocolate brownie.

This shop for all your super spy needs hides an educational secret.

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

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

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

A lush green oasis in the middle of Chicago.