Nice one Marcus!
I read in the paper last week that the Forth Road Bridge may be opened up for tourism in a similar way to your own Sydney Harbour one. http://www.forthbridges.org.uk/index.htm
At 156m / 512 feet high, this would certainly make MY eyes water!
As a wee boy I used to walk down to watch it being constructed (the road bridge, not the rail bridge!) so it still holds a soft spot for me, particularily as we both seem to ber rapidly wearing out!
Andy