Magnolia Mound Plantation House, human settlement in Louisiana, United States of America

Magnolia Mound Plantation House is a French Creole house built in 1791 near the Mississippi River in Baton Rouge. The one-and-a-half-story house has a steep gray shingle roof with a central brick chimney, broad porches with white square columns and railings, and a central red wooden staircase. The pale pinkish-beige facade has two small dormers with white-framed windows above the porch, and the raised house leaves an open understory supported by brick piers.

The first cottage was built in 1791 on land John Joyce of County Cork, Ireland, had bought that December; he drowned in 1798 while sailing from New Orleans to Mobile. His widow Constance Rochon married Armand Duplantier, a former Continental Army captain under Lafayette, and from 1802 to 1805 the couple enlarged the house to seven or eight rooms. Duplantier descendants owned it until 1849.

Period documents call the plantation Mount Magnolia, the source of the name. The grounds group the main house with an overseer's house (c. 1870), a reconstructed open-hearth kitchen, a carriage house with a weaver's workshop, and a pigeonnier (c. 1825) that again houses live pigeons. A double slave cabin (c. 1830) moved from Pointe Coupee Parish in 1998 has one half furnished for the early 19th century and the other holding an exhibit on enslaved life in Louisiana.

The site is accessible from downtown Baton Rouge and allows visitors to explore the main house and several outbuildings on the grounds. School groups frequently visit for guided tours, and visitors can walk around the property to see the yard with its mature trees and pathways, especially during special events.

The house was first a four-room cottage; around 1812 it grew to seven or eight rooms with a U-shaped gallery, and late 19th-century owners added rooms beneath the gallery on the north and south sides. A double slave cabin built around 1830 was moved here from Pointe Coupee Parish in 1998.