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.
Sydney
Modern and International architecture came to Sydney from the 1940s. Since its completion in 1973 the city's Opera House has become a World Heritage Site and one of the world's most renowned pieces of Modern design. It was conceived by Jørn Utzon with contributions from Peter Hall, Lionel Todd, and David Littlemore. Utzon was awarded the Pritzker Prize in 2003 for his work on the Opera House. Sydney is home to Australia's first building by renowned Canadian architect Frank Gehry, the Dr Chau Chak Wing Building (2015), based on the design of a tree house. An entrance from The Goods Line–a pedestrian pathway and former railway line–is located on the eastern border of the site.