The Basin, Ku-Ring-Gai Chase National Park, NSW, Australia.  To get to this amazing part of the world you have to catch a Ferry, but it is worth it.  Once you are there you can relax and enjoy the peaceful surroundings.  It is a popular destination for weekend getaways and we can see why.  The Basin is fed by a small inlet which turns into the most amazing swimming hole.  The Basin is well protected so it's perfect for camping, picnic's and swimming.