It took 16 years to build. Constructed between 1957 and 1973, is a masterpiece of modern architectural design, engineering and construction technology in Australia. It exhibits the creative genius of its designer, the Pritzker Prize winner Danish architect Jørn Utzon, the successful engineering by the Danish firm Ove Arup and Partners, and the Australian building contractors M R Hornibrook. The completion of the project was overseen by the architects Hall, Todd and Littlemore, and the story of its construction was one of great controversy.