Iconic Sydney Opera House Closes For Two Years

As the building approaches its 50th birthday, in 2023, the interventions are necessary. While its architect, Jorn Utzon, is now widely recognized as a visionary and his creation is a UNESCO World Heritage Site, the hall’s construction was troubled, and certain problems have never been solved. Years of testing have produced a new plan for the concert hall’s acoustics — as well as for more basic matters. – The New York Times