OCBC Skyway. The ticket costs 8 SGD which is totally worth it. We went there in the morning 10am so it’s not crowded. Initially, our plan was to go there on the day before at the evening but the queue was crazy, we’ve been told that we need to queue for 1.5 hour before getting up there. Definitely a great experience to enjoy the view of the Gardens at the height of 22m, which we’ve been told is 6th floor high. Tickets need to be purchased from a ticketing booth at the Supertree Groove, not from the one located near to the cooled conservatory.
Fyi, a scene from one of my favourite movie Hitman: Agent 47 was shot here.