What are the largest opera houses in Europe?

The largest opera houses in Europe are:

- Paris Opera (Salle Garnier), France

- Festspielhaus Baden-Baden, Germany

- Vienna State Opera, Austria

- Royal Opera House, Covent Garden, London, United Kingdom

- Palais Garnier, Paris, France

- Teatro Real (Royal Theatre), Madrid, Spain

- Metropolitan Opera, New York City, United States

- Bolshoi Theatre, Moscow, Russia

- Bavarian State Opera, Munich, Germany

- La Scala, Milan, Italy