Koala Conservation Hospital

If you're crazy about koalas, this is where you should go. Although admittedly not as big, showy or spectacular as other zoos on this list, the Koala Hospital in Port Macquarie does some genuinely incredible work in fighting to save one of the world's most adorable animals from extinction. A licensed wildlife rehabilitation facility, this place takes in injured koalas, nurses them back to life, and then releases them back into the wild. A volunteer-run not-for-profit, the Koala Hospital is free entry, with donations and gift shop sales all directly funding their conservation efforts. Expect to meet real koalas, check out a koala museum, go on a guided tour, and head behind the scenes to see the koalas in hospital. This is about as wholesome as it gets.