Townsville/Thuringowa's Riverway complex on Ross River* is a great public space. Art gallery, theatre, café and two swimming pools (open air, free). There's also a lovely walk along the river with barbecues and spots to stop and watch the tortoises (Emydura kreffttii) and archer fish (Toxotes). Townsville wasn't like this when I lived there!
* Yes, of virus fame.