Fright Fest at Six Flags Great America
Event Info: (847) 249-4636 sixflags.com/greatamerica
As if its Verticle Velocity coaster wasn't enough of a scream, Six Flags transforms to its Halloween alter ego with hair-raising shows, haunted houses and a trick-or-treat trail for kids. "In response to guests’ requests for a scarier 'Fright by Night,' ghoul repellent whistles are no longer available," the park's site says. In other words: No wimps allowed.