There is no more consequential building created in the 20th century; no other building has so comprehensively defined a city, stretched the technology of its day and required as much toil of its people. 50 years after the opening of the Sydney Opera House, it is easy to assume the inevitability of the structure that stands, but this was Australia's moon project. It pushed international capability to breaking point and absorbed vast teams of talented individuals into the unknown, experimenting with new techniques for years. Only through the collective can we understand its story. With the benefit of key first-hand accounts, now publicly known, this book lays out the critical moments for Jørn Utzon and the building's key designers as they played out at Sydney's world-heritage site.