The Great Barrier Reef is like mother nature's masterpiece (and is a UNESCO World Heritage Site!) - it's the largest living thing on Earth... 2,300km of reefs, islands, corals and an endless amount of brightly coloured fish, dolphins, turtles, and whales. It's even visible from space, although if you want to stay a little closer to Earth you can see it when you fly in to Cairns. You can go sailing around the islands, snorkelling the reefs, or diving into the depths of the ocean. One thing's for sure, visiting the Great Barrier Reef will be a memory that will stay with you for a lifetime.