Sidney+Opera+House+-+Stefanut+Mirel

The Concert Hall and Opera Theatre are each contained in the two largest groups of shells, and the other theatres are located on the sides of the shell groupings. The form of the shells is chosen to reflect the internal height requirements, rising from the low entrance spaces, over the seating areas and up to the high stage towers. A much smaller group of shells set to one side of the Monumental steps houses the Bennelong Restaurant. Although the roof structures of the Sydney Opera House are commonly referred to as shells (as they are in this article), they are in fact not shells in a strictly structural sense, but are instead precast concrete panels supported by precast concrete ribs. Sydney Opera House must be one of the most recognisable images of the modern world - up there with the Eiffel Tower and the Empire State Building - and one of the most photographed. Not only is it recognisable, it has come to represent 'Australia'. Although only having been open since 1973, it is as representative of Australia as the pyramids are of Egypt and the Colosseum of Rome. The Opera House is situated on Bennelong Point, which reaches out into the harbour. The skyline of the Sydney Harbour Bridge, the blue water of the harbour and the Sydney Opera House, viewed from a ferry or from the air, is dramatic and unforgettable. Ironic, perhaps, that this Australian icon - the Opera House with a roof evocative of a ship at full sail - was designed by renowned Danish architect - Jorn Utzon. In the late 1950s the New South Wales (NSW) Government established an appeal fund to finance the construction of the Sydney Opera House, and conducted a competition for its design. Utzon's design was chosen. The irony was that his design was, arguably, beyond the capabilities of engineering of the time. Utzon spent a couple of years reworking the design and it was 1961 before he had solved the problem of how to build the distinguishing feature - the 'sails' of the roof