When you think of something haunted, you probably picture an old building, a wide-open field, or maybe even a dark, eerie road, but a zoo? Yet in Illinois, the most haunted place in the state just so happens to be a zoo. The Lincoln Park Zoo in Chicago is a free zoo where guests can spend the day learning about animals, enjoying time with family and friends, and, if you believe the stories, possibly encountering something otherworldly. The Lincoln Park Zoo is often considered the most active haunted site in both Chicago and Illinois. One thing is for sure: the next time you walk through Lincoln Park Zoo, you might think twice about what’s really beneath your feet.