Lake Burley Griffin, ACT
Totally man-made by damming the Molonglo river, completed in 1963. There are plenty of things to do on the lake, as well as over 40km of shoreline dotted with man-made wonders.
Ellenborough Falls, Port Macquarie, NSW
At 200m high and with the honour of the longest single-drop falls in the southern hemisphere, the view when you get here is absolutely spectacular. A short walk to views, or a longer 30-60min walk for the adventurous.