The Sydney Opera House is a multi-venue performing arts centre on Bennelong Point in Sydney, New South Wales, Australia. It was conceived and largely built by Danish architect Jørn Utzon, who in 2003 received the Pritzker Prize, architecture's highest honour.
The Concert Hall is within the western group of shells, the Opera Theatre within the eastern group. The scale of the shells was chosen to reflect the internal height requirements, rising from the low entrance spaces, over the seating areas and up to the high stage towers. The minor venues (Drama Theatre, Playhouse, and The Studio) are located beneath the Concert Hall, as part of the western shell group.
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.
The Sydney Opera House is an expressionist modern design, with a series of large precast concrete 'shells', each taken from a hemisphere of the same radius, forming the roofs of the structure, set on a monumental podium.
The building covers 1.8 hectares (4.5 acres) of land, and is 183 metres (605 ft) long and 120 metres (388 ft) wide at its widest point. It is supported on 588 concrete piers sunk up to 25 metres below sea level. Its power supply is equivalent to that of a town of 25,000 people, and is distributed by 645 kilometres (401 Miles)of electrical cable.
