The Sydney Harbour Bridge is one of Australia's most well know and photographed landmarks. It is the world's largest (but not the longest) steel arch bridge with the top of the bridge standing 134 metres above the harbour.
Fondly know by the locals the the 'coathanger' the Sydney Harbour Bridge celebrated it's 70th birthday in 2002, with its official opening in March 1932.
For more information on Sydney Harbour Bridge you can check this site out:
http://ww.cultureandrecreation.gov.au/a ... ourbridge/