The Vienna State Opera is one of the top opera addresses in the world – where you can enjoy the very best in first-class productions. This famous stage offers a different program every day, with over 50 operas and ballet works on around 300 days per season.
At the Vienna Opera Ball, the Vienna State Opera is transformed into the world’s most famous ballroom. The committee, consisting of approximately 150 pairs of young men and women in white ball gowns and tails, ensures a glamorous opening of the Opera Ball.
https://www.wien.info/en/music-stage-shows/opera-operetta/state-opera