Formal construction on the second office building in Sydney Harbour's $6 billion Barangaroo project has begun, with the work set to usher in a striking new look for the area.

Historically used for shipping and stevedoring, the 22-hectare Barangaroo precinct, which includes an area along Sydney Harbour between King Street Wharf and Walsh Bay, is being transformed into a public, residential and commercial area. The original master plan divided the development into three sections. The Barangaroo South section was designed…