 Like many World Heritage sites around the world, including Yellowstone National Park, Serengeti National Park, Stonehenge, Pompeii and Herculaneum and the Pyramids of Egypt – the park use fee helps to maintain world-best management practices and facilities for the more than 200,000 visitors who experience Kakadu each year.The $25 fee 1 Nov - 31 Mar and $40 fee 1 Apr - 31 Oct (which is inclusive of GST) applies to all interstate and international visitors aged 16 years and over.All Northern Territory residents and children under 16 are exempt.