City of Melbourne was created in 1842.
Swansea City Opera was created in 2004.
New York City Opera was created in 1944.
Tokyo Opera City Tower was created in 1996.
Central City Opera House was created in 1878.
Chicago City Opera Company was created in 1935.
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"
Melbourne
Melbourne was created in 1835.
Melbourne IT was created in 1996.
Melbourne is the capital city of Victoria, Australia.
Slavia Melbourne was created in 1951.