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.
Sydney Opera House
Refurbished Western Foyer and Accessibility improvements were commissioned on 17 November 2009, the largest building project completed since Utzon was re-engaged in 1999. Designed by Utzon and his son Jan, the project provided improved ticketing, toilet and cloaking facilities. New escalators and a public lift enabled enhanced access for the disabled and families with prams. The prominent paralympian athlete Louise Sauvage was announced as the building's "accessibility ambassador" to advise on further improvements to aid people with disabilities.