Old Spanish Fort,

Old Spanish Fort, also known as Old French Fort and LaPointe-Krebs House, was built on the shore of Lake Catahoula (Krebs Lake) near what is now Pascagoula, Mississippi, by French Canadian Joseph Simon de la Pointe.Construction of the house dates back to 1757, based on dendrochronology examination of structural timbers, making it the state's oldest surviving building, the state's only French Colonial structure still in existence, and the oldest scientifically-confirmed standing structure in the Mississippi River Valley. -from Wikipedia