Kingsley Plantation, Plantation at Fort George Island, Jacksonville, United States.

Kingsley Plantation occupies about 60 acres at the northern tip of Fort George Island, where the Fort George Inlet meets the tidal estuaries near Jacksonville. Its centerpiece is a two-story plantation house built probably in 1797–1798, the oldest surviving plantation house in Florida, with an attached kitchen house and barn. The foundations of these buildings and of 25 slave cabins were made of tabby concrete; the cabin village is among the best preserved in the United States.

Richard Hazard started the first plantation on Fort George Island in 1765, growing indigo with several dozen enslaved Africans. Zephaniah Kingsley owned the estate for 25 years, from 1803 to 1838, and in 1836 moved his family to Mayorasgo de Koka in Haiti. Free blacks and private owners lived there until Florida bought it in 1955; the National Park Service acquired it in 1991.

The plantation carries the surname of Zephaniah Kingsley, who managed the land and lived there with his wife Anna, originally enslaved and later freed. The main house with its encircling porch reflects the lifestyle of the planter class, while the row of small dwellings on the property shows the living quarters of the enslaved community.

The grounds are open without an entrance fee and offer several marked walking paths through the historical areas, while the interior of the main house can only be visited with a guide. Visitors should bring sturdy shoes and sun protection, as many paths run through open areas under the sky.

Anna Madgigine Jai, who was brought from Senegal and enslaved here, gained her freedom through marriage to the plantation owner and later managed parts of the estate herself. Her story stands at the center of the on-site interpretation, which highlights how complex social relations could be within a slaveholding society.