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.
Marysville Opera House
The new opera house was built the following year by local contractor A.E. Heider, at a cost of $20,000 (). The cornerstone was laid on March 26 and construction was finished by August 1911. The new building was designed to grow with the city and serve social functions as well as traveling shows. It was the second known structure in Snohomish County, Washington to use poured concrete, rather than timber or masonry, in its construction.