The Lefferts Historic House is located within Prospect Park in Brooklyn, New York City. Built circa 1783, it is the former home of enslaved persons and the family of Continental Army Lieutenant . It currently operates as a museum of the Leffertses' family life in Kings County. The museum is part of the Historic House Trust, owned by the New York City Department of Parks and Recreation and operated by the Prospect Park Alliance. It is a New York City designated landmark.