We caught the MRT out to the Singapore Bird Park for the day.
Asian Civilisation Museum.
That night we headed out to the famous Singapore Night Zoo, a great attraction. If you have the time I recommend getting out of the trolley and walking around, there's so much more to see. It's also easy to get to via MRT and bus.
We finished the night by eating Chicken Rice and Satay at the Hawker's Market.