The Grand Opera House in Dubuque is described as haunted by reports of a male spirit on the balcony, known for being grouchy and making his presence felt, and two female apparitions seen in the front row, a phenomenon with origins in the 1930s movie theater era. Additionally, investigators have experienced ghostly pranks, such as having flashlights stolen and being followed by spirits. Visitors and investigators have also noted feelings of a presence and experiencing chills in areas like the costume storage. A male entity is said to inhabit the balcony level, reportedly possessing a "grouchy" demeanor and making his presence known through voices or by simply being felt. Early accounts from the theater's movie era, specifically the 1930s, mention two female spirits seen sitting in the front row. Some of the spirits are described as mischievous pranksters who engage in activities like stealing flashlights and following investigators around the building. Many visitors and staff report experiencing a general feeling of a presence, sometimes accompanied by unexplained chills, particularly in the costume storage area. Stories of hauntings at the Grand Opera House date back to the era of the building's use as a movie theater in the early 1930s. Paranormal investigators have conducted visits and used specialized equipment to document the alleged activity.