Brisbane CBD has several nice playgrounds that are worth half an hour stop while visiting the city. Surely the playgrounds in South park, including the aquatic playgrounds
Almost every Australian city has Botanic Gardens freely accessible. The City Botanic Gardens have many trees and flowers a playground, lot’s of birds and even flying foxes
Brisbane has several museums. We liked the Queensland museum. The State Queensland is full of unique animals and habitats, it has more animal species than anywhere else