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

One of the world’s largest living advertisements is made out of pine trees.

A source of civic pride, though the reason for its construction is unknown.

The body of one of the world's most famous outlaws is covered in cement and iron to prevent it from being stolen.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

Its eclectic exhibits range from the world’s first motorcycle to Luke Skywalker’s Land Speeder.

A historic and oft-filmed prison stands in a Chicago suburb.

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

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

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

This historic hotel invented the chocolate brownie.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

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

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

An eccentric park and pool.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

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

A Bibliophile's Dream.

Where Cusack's record store from the film "High Fidelity" was located.

A European-style bath house in Chicago.

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

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