Introduction to Sydney Harbor National Park: Sydney Harbor National Park (including the Harbor Islands and surrounding areas) was established in 1975. It not only has landmark buildings, but also has uninhabited beaches and picturesque small towns. Island and patches of rare native woodland. Swim, picnic and hike along the spectacular seafront, or take a ferry to explore the harbor islands and explore ancient rock art and convict-built structures. The Sydney to Hobart Yacht Race is also held here.