Sydney Opera House (1957-1973)
Construction of the Sydney Opera House began in 1959 and took 14 years, with costs ballooning from an estimated $7 million to $102 million. The project faced repeated delays and political controversy.
The opera house finally opened in 1973, 10 years behind schedule.
It became one of the world's most recognizable buildings and a symbol of Sydney.
The gap between approval and opening can be long and uncertain. A license is one step, not the finish line.
