Take your pick of two giant outdoor water slides at what's affectionately known as "Botany Big Splash". The aquatic centre also has two outdoor swimming pools, a shaded and heated pool for the little ones, a children's play area and a large grassy area for post-swim barbecues.
Parramatta pool has a 50m outdoor pool with two long water slides that travel through the bushy surroundings. There's no age restriction, so adults can ride along with younger children. We're told it's a little bit dark and scary – but that's all part of the fun! Cost: $3 for six rides.
Saving the best till last – it's gotta be the 360Rush, a mammoth set of duelling slides that each loop a full 360 degrees. Climb six storeys to the top, then race ya mate down the slide. You'll hit speeds of up to 60km/h. Which in water-slide-speed terms, is pretty darn fast.