Stephen Girard Park is a 4-acre (16,000 m2) park in Philadelphia, Pennsylvania, in the South Philadelphia neighborhood of Girard Estate, bounded between West Shunk, West Porter, 21st, and 22nd Streets.Originally it was part of two parcels of land that Stephen Girard purchased in 1797–1798, aggregating seventy-five acres in what was then Passyunk Township, Pennsylvania, which Girard developed into a farming enterprise that grew to 583 acres (236 ha).