sydney's central, is great, though not as impressive as some of the stations mentiond here,it certanatly has chararter (plese excuse spelling)and as you travel into it you see this massive expance of platforms as far as the eye can see,from the angle you can see out of a train window.
it does have a nice stone station enteance as well, and lots of tunnels to get between platforms. if i was to designeing a major terminal or interchange, i would modle it on Sydnye central. Sydney has other quite nice stations aswell, pennet hils, hornsby, North sydney, parramata, the ones in our city circle, and more. If only the system was run properly