The Old Opera House Site in Eau Claire, WI, is reportedly haunted by a few spirits, including a young girl who died after an accident involving a window pane in the early 1900s, and a man in a back room known as "Mr. Creepy". These are believed to be residual hauntings, meaning the spirits are not demonic but rather exhibit energy from past events. A young girl, believed to be three years old, died in the opera house after falling onto a window pane. A rosemary plant allegedly marks the spot where her soul departed, and she communicates using a little girl's voice. Another spirit is said to be an isolated man in a back room who has made his presence known by stating he is "right behind people". Beyond these specific entities, the opera house is home to other supernatural energies, though they are described as residual rather than demonic.