Thorntree, Historic building in Kingstree, US.

Thorntree, also known as the Witherspoon House, is a two-story, five-bay frame I-house with a hall-and-parlor plan and exterior end chimneys. Full-length piazzas run along the front and rear elevations. Built in 1749, it was moved to Kingstree's Fluitt-Nelson Memorial Park and restored to its 18th-century appearance.

Thorntree was built in 1749 by James Witherspoon, an immigrant who lived from 1700 to 1765. To save it, the house was later moved from its rural site to Kingstree, onto land donated as Fluitt-Nelson Memorial Park. It was listed in the National Register of Historic Places in 1970.

The house is also called the Witherspoon House, after James Witherspoon, who built it in 1749. It was moved to Kingstree on land donated as Fluitt-Nelson Memorial Park and restored to its 18th-century appearance. Visits are arranged by appointment with the Williamsburg Historical Society.

Thorntree stands in Fluitt-Nelson Memorial Park in Kingstree, not on private property. Visits are by appointment with the Williamsburg Historical Society, so arrange access before travelling. The house was moved here from its rural site, and the park setting allows visitors to walk up to the exterior.

The house was moved from its original rural site to Fluitt-Nelson Memorial Park in Kingstree so it could be preserved and visited; the park land was donated for that purpose.