The best view of Melbourne City.

The best view of Melbourne City.
However a bit pricey for the things you can do up there.
If you are willing to spend more extra bucks then this is the place for you otherwise you go up walk around in a circle for 15 minutes get a view of the city and that's $25 per person ($100 for a family of 4).
Then observation deck $22 per person.

Overall you should visit it once to experience it (I have been 3 times with different people, which is more than enough and has been the same experience every single time)