Mary Plantation House, French Creole plantation house in Plaquemines Parish, Louisiana, United States

Mary Plantation House is a French Creole house on the east bank of the Mississippi River, downriver from Braithwaite in Plaquemines Parish. Begun in 1795 and enlarged to its present form in 1820, it is the oldest house in the parish. Its raised form and broad roof respond to the river setting.

A house was built on the site around 1795, according to one architectural historian, and was significantly enlarged in the 1820s. It passed through a number of owners before Tulane botanist Eric Knobloch and his wife bought and restored it in 1946. It was listed on the National Register of Historic Places on July 13, 1983, and sold at auction in 2012 for $770,000.

The house reflects French Colonial building traditions and ways of life that shaped early Louisiana communities. You can see how the design responds to the local landscape and climate of the Mississippi River region.

The house stands on the east bank of the Mississippi River, downriver from Braithwaite in Plaquemines Parish, roughly a 45-minute drive from New Orleans by car. The property was bought at auction in 2012 for $770,000, so check current visiting arrangements before setting out.

A botanist from Tulane University purchased and restored the property in 1946, opening it to the public to preserve its history. His work saved this example of early Louisiana architecture from being lost.