UNESCO-listed Fraser Island is the world’s largest sand island and a hub for exhilarating 4WD adventures on its giant dunes and white-sand beaches. But there’s more than sand here—the island is dotted with shimmering freshwater lakes and natural saltwater baths in which to swim and crystal-clear creeks down which to float. Other top things to do on Fraser Island include admiring its wind-sculpted technicolor cliffs, checking out a beached shipwreck, and following trails through lush rain forest, as well as spotting wildlife such as dolphins, dingoes, and (from August through October) humpback whales.