The top attractions in all of the popular destinations, such as Lhasa, Shannan, Nyingchi, Shigatse, Chamdo, and Ngari regions, are included in this policy. The most popular sites in all of Tibet, such as the Potala Palace, Jokhang Temple, Yamdrok Lake, and Mount Everest National Nature Reserve, are all completely free to visit. For example, the Polata Palace is famous, not only for its splendor, but also for the difficulty in getting a ticket. To promote winter tourism, the Tibetan Autonomous Region of China has announced preferential policies for travelers in Tibet from now through April 30, 2018. However, from now through the end of April, every traveler can have a close encounter with its breathtaking beauty free of charge. This list of free tourist attractions includes four AAAAA-grade sites, 13 AAAA-grade sites, 45 AAA-grade sites, 38 AA-grade sites and 16 A-grade sites.