It's no surprise that balmy Queensland has one of Australia's best waterparks. Head straight to the Extreme H20 Zone if you're after a challenge. The exhilarating Black Hole takes riders on a spiral down into a pitch black tube slide. Or dare to take on the aptly named Kamikaze and plunge down a near vertical 36-foot (11m) drop for a zero gravity sensation. There are plenty of gentler rides too and lovely tropical gardens for splashing and chilling in.

Have you seen Australia's brilliantly bizarre Big Things?

The world's most incredible waterparks