An obvious choice perhaps, but one that is an absolute must to highlight. The snorkeling and diving here is, of course, world famous and for very good reason, too. The Great Barrier Reef is a UNSESCO World Heritage Site and just as pivotal to visit as one would consider the Eiffel Tower or Great Wall of China. With 2,900 individual reefs and over 900 islands stretching over 2,600km, not to mention the wild life—dolphins, porpoises, hump back whales and more—the sights that you’ll see here will be nothing short of unforgettable. Any concierge or travel agency will easily be able to recommend a reputable service for snorkeling, diving, or simply appreciating the views from the safe confines of a boat.