What country was the theatre that premiered The Power of the Fiend located in?
The Power of the Fiend:  The opera was premiered posthumously on 19 April 1871 (Old Style) at the Mariinsky Theatre in Saint Petersburg under Eduard Nápravník. Mariinsky Theatre: The Mariinsky Theatre (Russian: Мариинский театр , Mariinskiy Teatr, also spelled Maryinsky or Mariyinsky) is a historic theatre of opera and ballet in Saint Petersburg, Russia.
Russia