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.
Theater Kiel
The Kiel Opera House () is the city's major venue for opera, ballet, and orchestral performances. It was designed by architect Heinrich Seeling and built from 1905 to 1907. Aerial bombings destroyed much of the original structure in 1942 and 1943, and architects Henry Hansen and Guido Widmann were later brought in to restore the theatre from 1952 to 1953.