Port Jackson, containing Sydney Harbour which is one of World’s Top Travel Destinations , is the natural harbour of Sydney, Australia. It is known for its beauty, and in particular, as the location of the Sydney Opera House and Sydney Harbour Bridge. The location of the first European settlement in Australia, the harbour has continued to play a key role in the history and development of Sydney. It is used as the location of the New Year’s Eve Fireworks and the starting point of the Sydney to Hobart yacht race.
Port Jackson is a drowned river valley, or ria. It is 19 km long with an area of 55 km². The estuary’s volume at high tide is 562 million cubic metres. The perimeter of the estuary is 317 kilometres.
According to the Geographical Names Board of New South Wales, Port Jackson is “a harbour which comprises all the waters within an imaginary line joining North Head and South Head. Within this harbour lies North Harbour, Middle Harbour and Sydney Harbour.” These three harbours extend from the single entrance (known as Sydney Heads (North and South Heads)). North Harbour is the shortest, and is really just a large bay extending to Manly.
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