This is a good place to visit if you are only in Sydney briefly and really want to see some Australian animals. Value for money isn't great, but the exhibitions give you a good taste of Australian koalas, kangaroos, crocodiles and some other great animals.
I am glad I went on this tour after a really bad experience on the Zaanse Schans Windmills tour the day before. What a difference a GREAT tour guide makes, and the locations were great. My two little children loved Madurodam, and I enjoyed seeing Delft! The tour guide was wonderfully informative, and very nice!