The one hectare garden is a multi-sensory play area featuring water play, rainforest tree houses, ridge top trails and topiary pergola arches all in a special garden setting overlooking the Marina Reservoir.
The water playground is the central feature of the garden and has hydro vaults, water splines and orchid-shaped splash buckets which create a changing landscape made out of water, alongside toddler-sized sculptures at The Fish Fountain.
In the rainforest children can play on tree houses, elevated platforms and shelters linked by ropewalks, steps, ramps and slides and with devices for making sounds, telescopes, climbing nets and hammock seating.
Director Andrew Grant said the garden would "create play opportunities that are not found elsewhere in Singapore that connect children to nature via technology, art and horticulture."
Gardens by the Bay chief executive officer Dr Kiat W Tan said: "Words cannot express how pleased we are to offer children a special play area in Gardens by the Bay."
Gardens by the Bay won the Large-scale Public Development and the College of Fellow gongs at the Landscape Institute Awards in December, where the Bath-headquartered practice triumphed in four categories.
Since opening in June 2012 the gardens have attracted more than seven million visitors