Uluru National Park was made a UNESCO World Heritage Site in 1987, as a natural property. It had already been made a Biosphere Reserve by UNESCO in 1977. This means it was an important natural environment. The name of the park changed to Uluṟu–Kata Tjuṯa National Park in 1993. The next year, it was added to the list again, this time as a cultural landscape. This means that it is one of the few sites in the world that is chosen for both its natural and cultural importance. The listing recognised "tjukurpa" as being the best tool for looking after the park. In 1995, Uluṟu–Kata Tjuṯa National Park won the highest UNESCO award for setting new standards for the management of a World Heritage site.