I have finally discovered, after two years of living on the lower north shore of Sydney, where MacCallum Pool is. If you have the chance this summer, take a walk round Cremorne Point and have a swim here. The pool is FREE… yes FREE and offers the best views of the Harbour I think. All the locals stroll down here after work, sometimes with a beer in hand and take a lovely dip. It is a salt water pool and is cleaned every second Tuesday (I have been caught out several times by this!). More information about the pool can be found at the North Sydney Council website.