A plaque marks a former safe house on the secret route, now hidden next to a McDonald's.

A river with some unusual, and occasionally dangerous, habits.

The multinational Burger King chain is banned from operating within 20 miles of a family restaurant filed under the same name.

These abandoned grain silos and tunnels are an urban exploration dream.

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

The legacy of an unsolved, gruesome murder rests beneath the spans of this historic bridge.

A notorious Route 66 eatery once frequented by Al Capone.

The mysterious white squirrels of this Illinois city are treated like sacred cows.

Eclectic collection of rare and beautiful stones in a historic home.

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

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

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

This overgrown Illinois water park offers a whole new type of adventure.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

A hot dog stand where the heads are just as hot as the dogs.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

These pretty kitties killed and ate as many as 135 railway workers.

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

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

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.