Between Rust and Eisenstadt, outside the tiny village of St. Margarethen, is Römersteinbruch, a delightful rock quarry used for outdoor opera performances for six or seven weeks in July and August. It's one of the three largest outdoor opera venues in Europe, seating 7,000 nightly. The opera changes annually—usually a work by Verdi or Bizet's Carmen, with a Passion play running every fifth year. Performances also include a dazzling fireworks display. Ticket prices range from €43 to €90. It's a good idea to bring a seat cushion, if possible, to soften the metal chairs. Bus trips from Vienna and back to see performances can be arranged through several tour agencies. Daytime tours of the quarry (in German) are possible from April to October.