We are entering the premier weekend for haunted house tours. In the past couple of decades, the haunted tour has grown into a multimillion-dollar business, with attractions in every city and small town. Some are worth traveling for, as you'll see in this list I posted at mental_floss. It is not an exhaustive list, but may give you an idea of what's available to scare the living daylights out of you this Halloween. Be aware that many of the attraction websites have auto play sound. Happy haunting!