Planning fallacy
The Sydney Opera House was expected to be completed in 1963. A scaled-down version opened in 1973, a decade later. The original cost was estimated at $7 million, but its delayed completion led to a cost of $102 million.
Utzon's House in Hellebæk
After his family moved to Helsingør in 1937, Utzon — who was then 18 — became ever more attached to the area. The house remained his base for the rest of his life. "It's my laboratory," he once commented. It was in his Hellebæk study that he began working on the design of the Sydney Opera House in 1959.