When to go
In sunny Singapore, all months are great to visit, but go during dry weather conditions.
Visiting mid-day is when the sunlight would make the rainbow walls look most vibrant.
Field tips
By using a wide-angle lens (18mm) you can capture the long stretch of the wall.
I had the model simply lie down on the step, which is really low and not dangerous. I tilted my camera to get a different perspective. Get creative and play around with perspectives, tilting the camera as you like.
If you’re shooting a model, by wearing a solid, contrasting color they will avoid clashing with the rainbow colored background.