Hungarian State Opera House was created in 1884.

Sydney

They perform opera in Melbourne, Adelaide and other places though these do not entitle themselves as "Opera House"

In Adelaide it is th "State Opera"

in Melbourne "Opera Australia" (run by the same body that runs the "Sydney Opera House"

Some of the best concert halls for acoustics include: Vienna Musikverein, Amsterdam Concert Gebow, Boston Symphony Hall, Vienna State Opera, New York Metropolitan Opera, Sydney Opera House, Vienna Konzerthaus, New York Carnegie Hall, Budapest Hungarian State Opera House, and Los Angeles Walt Disney Concert Hall.

The Colon Theatre or Teatro Colón in Buenos Aires, Argentina, is one of the best opera houses for acoustics.

its in Australia stupid (which is a country)