Gardens by the Bay is a rather new area in Singapore. It was build to enhance Singapore's image as a 'premier tropical Garden City' - a great place to both live and work. Gardens by the Bay is a pretty amazing experience so I strongly recommend visiting it. The Garden is at its best at night and there is a song performance every evening around 7.45-8pm and 8.45-9pm.
You can for example do it as I did; go to the Marina Barrage at day time and then walk to the Gardens by the Bay at night. What a perfect day!
The Marina Bay Sands hotel/shopping centre is also a pretty amazing sight at night - and my mum's favourite building in Singapore. If you have extra cash, you book a night and take a swim at the infinity pool at the edge of the building...
X Ang Moh Chick