Vienna State Opera
The opera house was the first major building on the Vienna Ringstrasse commissioned by the Viennese "city expansion fund". Work commenced on the house in 1861 and was completed in 1869, following plans drawn up by architects August Sicard von Sicardsburg and Eduard van der Nüll. It was built in the Neo-Renaissance style by the renowned Czech architect and contractor Josef Hlávka.
Waagner-Biro
In 1906, the company provided the Vienna State Opera with stage equipment. Forty years later, the company rebuilt the opera house's roof. Other roof projects include Vienna's Stephansdom in 1948, the Munich Olympic facilities in 1969, the Prater Stadium in Vienna in 1985, and the Reichstag dome in Berlin, for which the company won a European Steel Design award in 1999. Waagner-Biro won another award in 2003 for the British Museum's Queen Elizabeth II Great Court.