What are your favourite free, outdoor playgrounds in Singapore?

Hi! Singapore has a lot of outdoor playgrounds for the kids to enjoy for free, and one of the newest and largest and definitely became my favourite instantly is the Children's Garden @Garden by the Bay. It especially targeted children up to age 12 and promotes interaction with nature, together with integrated play equipment and water play features spread over four main play zones 1. Adventure Trail 2. Rainforest Treehouses 3. Toddler Play Zone 4. Water Play Areas...surrounded by greens!