The Southdown Plantation House was created in 1859 as a sugar manor and is also home to the museum of Terrebonne that boasts of culture and history. It was built in a Greek Revival house that is one story and made by a sugar planter by the name of William J. Minor. It was his son who added the second floor to the building at Victorian style architecture in 1893.

All the exhibits of the museum include the original furniture items in the bedroom of the family along with other antique items which serve as proof to rich culture and history. It is also where you can find the art collection of Charles Gilbert and the literature collection of Thad St. Martin.