Wasn't today, but it was yesterday for me.
I opened up my Australian Zoo in Franchise mode, built a Southern Cassowary exhibit right next to my Red Kangaroo. I decorated it to be quite tropical, but still keeping areas open and spots for the guests to view them through the glass windows, as well as a path that wraps around to the back of the enclosure that ramps up allowing them to see over the fencing.
After that, I waited out until I got some more funds and I built what I called a "Koala Sphere". I created a large circular pen from the terrain editor, then carved out the inside with a small gap in one of the walls. In the gap I placed glass fencing, two guest habitat gates, and a single staff gate in between the two. The entire idea of the enclosure was to be a sort of enclosed are for Koalas where the guests could enter inside one of the entrances, walk around the entire perimeter to take a peak at the Koalas, and leave through the gate opposite of the one they entered. I created a little treehouse shelter for the Koalas and some climbing platforms as well.
Once I completed this, I created a large Saltwater Crocodile enclosure that actually went underneath the paths leading to the "Koala Sphere" mentioned above. Turning the paths into bridges headed towards the Koala's enclosure. To the sides of the now bridges, you could look down into the water and see the Crocodiles swimming if they happened to move over there.(They actually seem to really enjoy moving over there too!) I also created a bridge using paths going straight over the Crocodile enclosure to get to the opposite side where you could view them from the back of the enclosure where they have their feeding station, some enrichment items, and their shelter.
These were the 'finishing' touches of my Australian Zoo, all I need to do for now is decorate with some scenery and I'll be set until Frontier adds in more Australian animals!