I was wondering if there are any other places than sky bars in Marina and CBD where I can see Singapore from the high and I have found one such place. It is called ION Sky. The observatory is located at 55th and 56th level in ION, popular shopping center at Orchard Road.
The place gives the offers 360-degree view on the whole island and even more as we are able to see Malaysia! Key landmarks are also marked on the glass window so in case of doubt you can make sure what you are looking at :)
The only disadvantage I have found here is the fact that sometimes windows are simply dirty, so the view and pictures are not that perfect as I expected to see.
Overall a place worth to see, especially that visit here costs nothing!! (which is rare in Singapore).