Florida - Kingsley Plantation We spent a day on anchor in Ft. George River while we toured the Kingsley Plantation (1814). On its property stands the ruins of 25 tabby constucted slave cabins, in various stages of restoration. The Kingsley Plantation is the oldest standing plantation house in Florida, complete with its barn and kitchen house. Extensive restoration has made this site one of the most intact examples of the plantation system in Florida.