Founded in Sydney 1958, the National Institute of Dramatic Art boasts famous alumni including Cate Blanchett, Mel Gibson and Hugo Weaving. Construction of the Adelaide Festival Center began in 1970 and South Australia's Sir Robert Helpmann became director of the Adelaide Festival of Arts. The new wave of Australian theatre debuted in the 1970s. The Belvoir St Theatre presented works by Nick Enright and David Williamson. The Sydney Opera House, inaugurated in 1973, is the home of Opera Australia and the Sydney Theatre Company.