I did the Sydney Bridge climb as part of my honeymoon. We did the climb on our last night and decided we wanted to do the night-time climb as we had seen pictures and they turned out great. I can honestly say it was the highlight of our trip and we had already been to singapore, semarang, komodo island, darwin, cairns and brisbane! The view you get is amazing! We were even lucky enough to see fireworks going off at darling harbour. The climb is a lot easier than you think as it is a very gradual and gentle slope. If you go to Sydney, you have to do this!