Another beloved landmark Down Under, Sydney Harbour Bridge came earlier than the famous opera house and was finished and opened in 1932. The idea for a bridge that would connect the centre of Sydney to its northern suburbs had been floated in the 1910s by civil engineer John Bradfield, but the First World War prevented work from getting underway. By 1922, though, attention had turned back to the project and construction soon began. This photo shows the progress made by 1926.

These are Australia's most dangerous tourist attractions

Incredible images of the world's tourist attractions under construction