What was Samuel Sloan's most famous building located in Natchez, Mississippi?
Samuel Sloan (architect):  His most famous building—the octagonal mansion "Longwood" in Natchez, Mississippi—is unfinished; construction was abandoned during the American Civil War. Longwood (Natchez, Mississippi): Longwood, also known as Nutt's Folly, is an historic antebellum octagonal mansion located at 140 Lower Woodville Road in Natchez, Mississippi, United States.
Longwood