THE SYDNEY OPERA HOUSE (Sydney, Australia)
This 1973 "urban sculpture" at the tip of a peninsula projecting into Sydney Harbour is made of groups of interlocking sail-shaped shells housing two main performance halls and several smaller ones, plus a recording studio and a restaurant. Taking 15 years to build, many of them swamped in controversy, at last it stands as tall as a 22-story building.
(Image courtesy Wikimedia Commons; CTTO)
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