Marwood Mansion, once owned by the Gore family, is rumored to be haunted by its former butler, with alleged paranormal activity including self-flushing toilets, steam from bathtubs, and unexplained sounds in the basement. The stately home, located in Potomac, Maryland, was built on a 300-acre estate overlooking the Potomac River. An apparition of the family's butler is said to haunt the property. Strange sounds have been reported in the basement of the mansion. Other reported ghostly events include the bathroom window opening on its own, the toilet flushing by itself, and steam appearing in the bathtub.