Skeptics and believers will both enjoy joining the various Ghost Hunting Investigators on an after-hours tour through the dark passages of Fort Knox in search of ghosts and paranormal phenomena. Guests become part of a paranormal investigation using high-tech night vision and sensor equipment to discover what goes bump in the night.. Warning – limited lighting with some hazardous terrain. Limited capacity of tickets (minimum age 18 or 12 if accompanied by an adult). Bring a flashlight!