Great photo, you can just make out on the left hand side of the bridge. Luna Park.
When I was 15 years old I was in the RAAF cadets based in Wollongong and we had been to camp at Camben for the week end or so. On our way back we had to change trains at Sydney and at the time we had a couple of hours to kill. So I and my mate made our way to luna park for a small visit. Hehe like you do when you are kids.