Louisville's secret tunnels

Louisville's secret tunnels: Waverly Hills Sanatorium
Some say the former sanatorium is haunted, and that's why Tina Mattingly and her husband bought the hospital in 2001. They host paranormal investigators and ghost enthusiasts throughout the year.
Mary Ann Gerth/Courier-Journal/USA TODAY Network
Today, Waverly Hills attracts tourists from around the country with its paranormal and historical guided tours. It also allows private paranormal groups to host investigations of the facility, many of whom claim to have experienced inexplicable paranormal activity during their visits. ς.