It’s fifty years they tell us since the creation of Utzon’s Opera House and it’s strange to think how this weird abstract sea-creature has come to have a permanent place in the minds not only of Sydneysiders but of the nation as a whole. It’s partly perhaps that Utzon’s design was an appartition waiting to happen as if one of the greatest harbours in the world could only have its appropriate consummation in the Danish architect’s dream of a mighty building that seemed in its dazzling apparitional way to be a thing of nature for all the glory of its...