Longwood, also known as Nutt's Folly, is a historic antebellum octagonal mansion located at 140 Lower Woodville Road in Natchez, Mississippi, United States.

Samuel Sloan, a Philadelphia architect, designed the home in 1859 for cotton planter Haller Nutt.

Haller Nutt's never-finished Natchez home, Longwood, was the last burst of Southern opulence before war and the federal ban on enslaving people brought the cotton barons' dominance to an end.

[9] Longwood is owned and operated as a historic house museum by the Pilgrimage Garden Club; it is also available for rent.

[10] Longwood was featured in the Southern United States segment of Guide to Historic Homes of America,[11] an in-depth production by Bob Vila for the A&E Network.