Outback Splash, Bullsbrook, WA

The 20m-high tower features four fibreglass water slides totalling 489m for thrill seekers.

Those include two raft slides called ‘The Wall’ and ‘Blackout’, an enclosed golden speed slide called ‘Gold Rush’ and WA’s fastest body slide, named ‘The Wedgie’, which sees riders plunge downward at speeds of up to 75km/h.