Conover Square in Oregon, Illinois, a former piano factory, is considered haunted by a range of phenomena including disembodied giggles, loud crashes from the unoccupied third floor, a mysterious "lady in white" who appears and disappears, strange piano notes, and unexplained knocks and cries. Other reported occurrences include the sound of gates opening, growls, and a shadowy male presence in the south hallway. Disembodied giggling and cries, loud crashes, unexplained knocks, growls, and piano notes have been reported by visitors and paranormal investigators. A recurring phenomenon is the appearance of a "lady in white" who enters stores but is never seen leaving. There are also reports of shadow people and a man's presence in the south hallway. A chilling experience involved a glow stick that moved on its own, a toddler's rocking horse that started to rock, and a disembodied hand reaching for a ball during a paranormal investigation. The building served as a piano factory in the late 1800s and early 1900s.