This is a must-do if you are in Sydney - even if you have tickets to see a performance in one of the theaters, you really must also do this tour, as the information is so important to gaining a full appreciation for the innovative architecture, history, and general design/setup of the building. There is so much more to the Opera House than a place to watch an opera! There are several other theaters, meeting rooms, gathering places - so much history! So interesting to hear about the set backs in planning, in construction, in funding......and not the least great reason to do this tour, is that you will be able to take some incredible photos. Enjoy, learn, appreciate!