Lhasa is the administrative capital and a prefecture-level city of the Tibet Autonomous Region, People’s Republic of China. It is the second most populous city on the Tibetan Plateau, after Xining, and at an altitude of 3,490 metres, Lhasa is one of the highest cities in the world. The city contains many culturally significant Tibetan Buddhist sites such as the Potala Palace, Jokhang temple and Norbulingka palaces, many of which are located in Chengguan District, the city seat.