SYDNEY, AUSTRALIA - OCTOBER 20: A giant birthday cake sits on the Opera House forecourt to celebrate the Sydney Opera House's 40th anniversary at Sydney Opera House on October 20, 2013 in Sydney, ... more 
SYDNEY, AUSTRALIA - OCTOBER 20: A giant birthday cake sits on the Opera House forecourt to celebrate the Sydney Opera House's 40th anniversary at Sydney Opera House on October 20, 2013 in Sydney, Australia. Today the iconic Sydney Opera House celebrates 40 years since it was officially opened by Queen Elizabeth II in 1973. Designed by Danish architect, Jorn Utzon, the famous landmark is the busiest performance centre in the world with over 1500 performances per year and serves as home to Opera Australia, The Australian Ballet, the Sydney Theatre Company and the Sydney Symphony Orchestra. Utzon famously quit the project following delays and cost blow-outs, but the building was completed, ten years late and fourteen times over budget, without any mention of the architect. Thirty years later, Jorn Utzon was awarded the Pritzker Prize and the Opera House was declared 'one of the great iconic buildings of the 20th century'. In 2007 it was declared a UNESCO World Heritage Site. (Photo by Lisa Maree Williams/Getty Images) less 
1 / 31
Getty Images | Photo By Lisa Maree Williams / Getty Images
Sat, Oct 19, 2013 10:26 PM EDT