Fontainebleau State Park occupies 2,800 acres on Lake Pontchartrain’s north shore near Mandeville, where shoreline, marsh, and forest create notable bird habitat. The land was once part of Bernard de Marigny’s estate; he built a sugar mill there in 1829 and named the property Fontainebleau. Under his son Armand Marigny, the plantation held 153 enslaved people in 1840, including 57 children younger than ten. The park also contains the Tchefuncte site, adding archaeological significance to its plantation history. Listed on the National Register of Historic Places in 1999, it now serves visitors with trails, camping, beach and fishing access, and a connection to the Tammany Trace.