18. The Springhill House, County Londonderry, Northern Ireland
The Springhill house rests in a plantation where George Lenox-Conyngham took his own life in 1816. It has since become one of the most haunted places in the country. One of the most notorious ghostly apparitions was a tall lady in a black dress. She was thought to be Olivia, the widow of Lenox-Conyngham.
