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.
Ljubljana Opera House
The building was originally named the Provincial Theatre () and was built between 1890 and 1892 in the Neo-Renaissance style by the Czech architects Jan Vladimír Hráský and Anton Hruby. Before the construction of the German Theatre (the present Ljubljana National Drama Theatre (SNG) at 1 Erjavec Street) in 1911, the building served as a venue for productions in both Slovene and German, and afterwards only in Slovene.