Plans had first been drawn up by Dr Bradfield when he designed the city subway and the Harbour Bridge. However, the Great Depression and World War II intervened. Plans were progressed further from 1947, but lapsed in the mid-'50s. It was not until 1979 that the line was actually opened. And not to Bondi Beach, but rather to Bondi Junction a few kilometers up the hill.
This shot was taken looking eastwards from the Rushcutters Bay pedestrian overpass, showing a train coming from Edgecliff station and heading for Kings Cross station.