World's second largest particle accelerator, where nature reveals its secrets.

Huge abstract sculptures of the Puerto Rican Flag.

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

A lush green oasis in the middle of Chicago.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

A theater sits abandoned on Roosevelt Road, once majestic in splendor, now majestic in decay.

A towering Art Deco movie palace made to look like a Mayan temple.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

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

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

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

Museum dedicated to the art of cutting and polishing stones.

People escaping slavery passed through the oldest house in Lombard, Illinois on their northbound journey to freedom.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.