I am also going to New South Wales and especially Sydney I am going to go to sydney opera house.
I have also heard of Sydney harbour bridge and especially for his breathtaking view a the top of the city.
You should try it too !
.It gives you a breath taking view to the region were you can also see tropical forests .
There are also Blue Moutains where I am going to climb at bicycle
In these places, you can see some platypus and some exotic species like crocs and koalas