Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

A hidden grotto on the grounds of the Kane County Government Center.

This Mediterranean castle was built for a millionaire and his giant dog.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

Museum dedicated to the art of cutting and polishing stones.

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

This abandoned 19th century orphanage started as a boarding school for children of Civil War veterans.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

Where old school Polish Chicago and young hipster Chicago live side by side.

A notorious Route 66 eatery once frequented by Al Capone.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

The subtle science of a master molecular gastronomist.

An antiquated German apothecary on Chicago's North Side.

These mansions date back to Chicago's days as a brewer's paradise.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

The remains of a Rockefeller's lush Italianate estate hidden in the underbrush on the coast of Lake Michigan.

Once known as the Illinois Asylum for the Incurable Insane.

Moving, mind-blowing metal sculpture work of an outsider artist.

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

The poet’s boyhood home is now dedicated to celebrating his life and legacy.