Bonnie Castle in Grantville, Georgia is described as a real haunted location and former bed and breakfast, said to be haunted by the spirit of the original owner, a spectral cat, and a woman named Mary who dislikes electricity. Eerie noises are reported, and some experiences include friendly ghosts. Reported Spirits at Bonnie Castle: The Original Owner: A man believed to be the original owner of the castle. Mary: A female spirit who is said to hate electricity. Spectral Cat: A ghostly feline also reported to inhabit the property. Visitors and locals have reported hearing strange sounds emanating from the building at all hours of the night. Some experiences with the spirits are described as being friendly. Bonnie Castle is a real, reportedly haunted house located on Colley Street in Grantville, Georgia. It previously operated as a bed and breakfast inn but has since closed. Grantville is known as a site for filming The Walking Dead, and Bonnie Castle is listed as one of the area's most haunted sites.