Fontainebleau State Park is located in St. Tammany Parish, Louisiana, on the north shore of Lake Pontchartrain.

The park is 2,800 acres (1,100 ha) in size and was once the site of a sugar cane plantation and brickyard operated by Bernard de Marigny and later by his son Armand Marigny.

The visitor center highlights the history of the land which was once owned by the wealthy Bernard de Marigny (1785–1868) of New Orleans and founder of Mandeville, which lies directly to the west of Fontainebleau Park.

He named his large holding Fontainebleau after the beautiful forest near Paris, France.

In 1840, his son Armand documented the presence of 153 enslaved individuals at the site, including 57 children under the age of ten.