Everyone knows Sydney. The iconic harbour bridge, opera house and stunning beaches. Everyone knows the Great Barrier Reef. Everyone knows Uluru. But not everyone knows about Melbourne. It's hardly a hidden secret, but Melbourne is one of the greatest cities in the world. While more and more people are starting to consider Melbourne as a destination on their next vacation, we still think everyone needs to know what a great city it is. So here are 15 images that will change your mind and have you rushing to book that Melbourne getaway.