Oct 20, 1973. One of the most iconic and dramatic man-made structures of the 20th century, the Sydney Opera House, was opened by Queen Elizabeth II at Sydney, Australia, on this date. Designed by Danish architect Jrn Utzon, the theater is perched on Sydney Harbor and appears to bea ship in full sail. It took 14 years to build, and its roof is covered with more than one million tiles.
October 20, 2020 all-day