 The Sydney Harbour National Park was finally gazetted in 1975, with Nielsen Park at Shark Bay being added in 1978.Extra land was transferred from Commonwealth to State Government control, and added to the national park in 1979; the historically important quarantine station at Manly was added in 1984.The national park is renowned for its sheltered beaches, tranquil picnic spots, rich Aboriginal, colonial and military heritage, aquatic reserves and harbour islands.