When was this opera house formally opened?
To within one year either way, when was the Sydney Opera House formally opened by Queen Elizabeth II?
one thousand, nine hundred and seventy-three 1973 1973 1973 one thousand nine hundred and seventy three
1973
Section::::Abstract.
Sydney Opera House
28222
Section::::Reign.:Acceleration of decolonisation.

Elizabeth II
12153654
Section::::Demographics.:Ancestry and immigration.

Australia
4689264