The northern parts of Australia are home to some incredible sights to see for those who want to take in all that Australia has to offer such as the Great Barrier Reef.  One of the natural wonders of the world it is worth spending the time to snorkel or dive around the reef and immerse yourself in a spectacular underwater world.  In order to spend some time on the reef, Cairns is the Australian city to fly into and be based out of.  With the cheap car hire cairns airport options that are available there are plenty of ways to make such an exotic adventure affordable.