The Paris Opera House.
Paris and Rouen
If your question is "In which city is the Sydney Opera House?" I guess the answer is Sydney, Australia...
The Sydney Opera House.
The city witch it was performed was in Paris.
The Paris Opera House.
Paris, France.
Paris, France
The Paris Opera House (the Opera Populaire). However in real life the opera house is called the Palais Garnier (or Opéra de Paris, Opéra Garnier, or Paris Opéra.) The Opera Populaire was merely made up for the show.
The 1800s
Paris and Rouen
It is set in Paris, France
Central City Opera House was created in 1878.
Phantom of the Opera the stage play is available at any city and state with its own unique cast. Sometimes a Broadway's Phantom of the Opera will travel to state to state, to give an unique performance. It is the same with London's Phantom of the Opera, they can travel to Regions of the UK to varieties of cities, towns.
Images for Phantom of the Opera masks can be found from a number of places. One can get them from 'Google Images', 'Amazon', 'eBay' and from 'Party City'.
If your question is "In which city is the Sydney Opera House?" I guess the answer is Sydney, Australia...
The Sydney Opera House.