What opera do critics consider to be the best opera?

There is no one definitive answer to this question, as different critics have different opinions. However, some of the most frequently mentioned operas that are considered to be among the best include:

- "The Ring of the Nibelung" by Richard Wagner

- "Tristan und Isolde" by Richard Wagner

- "La bohème" by Giacomo Puccini

- "Tosca" by Giacomo Puccini

- "Madama Butterfly" by Giacomo Puccini

- "Salome" by Richard Strauss

- "Elektra" by Richard Strauss

- "Der Rosenkavalier" by Richard Strauss

- "Fidelio" by Ludwig van Beethoven

- "Don Giovanni" by Wolfgang Amadeus Mozart