The rounded curves of the war memorial at kings park allow for some acoustic wizardry, sitting at one end and having a friend sit at the other side of the curved seating area you can whisper to each other and hear perfectly like you are right next to each other but are really about 25metres away.

The curved bench around the memorial flame is the place to do this trick, simply sit at each end (try it when there's noone sitting in between) and whisper along the wall to your friend at the other end.

Its a great little trick for the kids who aren't likely to get the significance of the memorial and can enjoy themselves whispering and making fart noises to each other (quietly) while you take in the view and the serenity.