top 10 theaters in the world

1- The Royal Opera House, London
2- The Bolshoi Theatre, Moscow
3- The Palais Garnier, Paris
4- The Mariinsky Theatre, St. Petersburg
5- The Teatro alla Scala, Milan
6- The Sydney Opera House, Sydney
7- The Metropolitan Opera House, New York City
8- The Royal Theatre, Copenhagen
9- The National Centre for the Performing Arts, Beijing
10- The Gran Teatre del Liceu, Barcelona