John Heinz National Wildlife Refuge is considered America’s First Urban Refuge and was established in 1972 for the purpose of preserving, restoring, and developing the natural area known as Tinicum Marsh and promoting environmental education.

John Heinz National Wildlife Refuge is considered America’s First Urban Refuge and was established in 1972 for the purpose of preserving, restoring, and developing the natural area known as Tinicum Marsh and promoting environmental education.