There are 19 World Heritage sites in Australia, ranging from large natural areas to prominent and historical buildings. The Great Barrier Reef and the Wet Tropics of Queensland are both listed for all four natural criteria. Some sites such as Uluru and Kakadu are listed for both natural and cultural values. The nineteen Australian World Heritage sites are (with links to the UNESCO website):
Australia's World Heritage Areas cover 45,401.471ha (25 percent of Australia's protected area). The Great Barrier Reef is the third largest World Heritage Area (34,479,268ha).