The famous natural feature located in Australia that is a UNESCO World Heritage site is the Great Barrier Reef. This stunning coral reef system is the largest in the world, stretching over 2,300 kilometers along the coast of Queensland. It is renowned for its biodiversity, supporting a wide array of marine life, including over 1,500 species of fish, sea turtles, and various coral species. The Great Barrier Reef is not only a natural wonder but also a major attraction for tourism and research.