This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

Cemetery featuring rare glass-fronted columbarium.

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

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

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

Medical museum focused on antique anesthesiology equipment.

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

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

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

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

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

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

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

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

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

Former meatpacking facility turned vertical farm and sustainable business complex.