The Windsor Ruins are located in Claiborne County,Mississippi about 10 miles southwest of Port Gibson near Alcorn State University. The ruins are those of the largest antebellum Greek Revival mansion built in the state, and have been used in various motion pictures.

The Windsor Plantation at one time covered 2,600 acres (11 km²). Smith Coffee Daniell II, who was born in Mississippi in 1826, the son of an Indian fighter turned farmer and landowner, constructed the mansion itself in 1859-1861. In 1849 he married his cousin Catherine Freeland (1830-1903) by whom he had three children.The mansion cost about $175,000.00 (this would be about 3.5 million dollars today) to build and was completed in 1861. However Smith Daniell lived in the home only a few weeks before he died at the age of 34.