Planning fallacy
The Sydney Opera House was expected to be completed in 1963. A scaled-down version opened in 1973, a decade later. The original cost was estimated at $7 million, but its delayed completion led to a cost of $102 million.
Opera Australia
Luciano Pavarotti and Joan Sutherland appeared at the Concert Hall of the Sydney Opera House in 1983, with the Elizabethan Sydney Orchestra conducted by Richard Bonynge (the sister orchestra in Melbourne was known as the Elizabethan Melbourne Orchestra. Now they are known respectively as the Australian Opera and Ballet Orchestra, Sydney and Orchestra Victoria, Melbourne). Another successful concert with Sutherland and Marilyn Horne was held in the Concert Hall.