Changi Coast Road
Did your kids like aeroplanes? I am sure they see the inside of the planes all the time but how about when the plane takes off?
I think the best place to see it is at Changi Coast Road. You can actually see the underbelly of the planes at the edge of the runway.
You can park at the Tanah Merah Country Club or rent a bicycle and cycle all the way from East Coast Park!