Franklin Delano Roosevelt Park is a park located along the Delaware River in the southernmost point of South Philadelphia, Pennsylvania, comprising some 348 acres, about 125 acres of buildings, roadways, pathways for walking, landscaped architecture, and a variety of picnic and recreation areas placed within about 77 acres of natural lands including ponds a…Franklin Delano Roosevelt Park is a park located along the Delaware River in the southernmost point of South Philadelphia, Pennsylvania, comprising some 348 acres, about 125 acres of buildings, roadways, pathways for walking, landscaped architecture, and a variety of picnic and recreation areas placed within about 77 acres of natural lands including ponds and lagoons.