The Houmas Plantation was a tract of land along the Mississippi River purchased from the Houmas Indians in colonial times by Maurice Conway and Alexandre Latil. It was Latil who built the rear house in the late 1700s, with characteristics of both Spanish and rural French architecture. In 1840 the plantation was bought by John Smith Preston, who built a Greek Revival Mansion. It is furnished with early 19th-century antiques, including a collection of armoires.