 It comprises , including the plantation house where O'Connor wrote some of her last and best-known fiction.The land on which Andalusia was first built had in the mid-19th century been a working plantation of between 1,500 and 1,700 acres owned and operated by Joseph and Mary "Polly" Stovall.After Polly Stovall's death, the estate was purchased at a public auction by sometime mayor of Milledgeville, Nathan Hawkins, and later sold to Col. Thomas Johnson of Kentucky in 1870.