Denver Union Station is said to be haunted by several spirits, including a homeless man with three fingers, a lost traveler, a commanding military presence, and a ghostly little girl. Paranormal activity reported by staff and visitors during renovations included disembodied music, missing papers, and ghostly apparitions appearing and disappearing around the station and its platforms. A spirit of a homeless man with three fingers has been seen, terrifying others by suddenly appearing and vanishing. Apparitions of confused travelers, perhaps having died in the station, have been reported. A strong, commanding presence, potentially a military man, has been sensed by individuals with strong intuition. A spectral little girl is said to haunt the basement of the station. During the FasTracks redevelopment, workers heard music that sounded like it was from the 1930s or 40s, but found no source for it. Staff also reported unexplained events like papers going missing and ghostly encounters becoming a regular occurrence. A spirit resembling a lost person from the mid-20th century has also been reported.