Sydney Opera House celebrates 50 years as an architectural icon

The Sydney Opera House opened in 1973 after a lengthy and difficult construction.
The building was designed by Danish architect Jørn Utzon, winner of an international design competition.
With its iconic shell-shaped design, the Opera House is one of the most recognizable buildings in the world.
Over 10 million people visit the Opera House every year for performances and tours.
The Opera House's 50th anniversary celebrations highlight its cultural importance to Australia.