As an icon of a city, it is as instantly recognizable as the Eiffel Tower, the Statue of Liberty or the Golden Gate Bridge.
It is almost 50 years since Danish architect Joern Utzon was chosen to build the Sydney Opera House at Bennelong Point on the Australian city's harbor front.
It's certainly an eye-catching building. I think much of its iconic quality is derived from not really fitting neatly into any era of artchitecture - it's genuinly unique!
