【正确答案】Potala Palace is an ancient architectural complex and is considered as a model of Tibetan buildings. It is located on the Red Hill in Lhasa, Tibet, being about 3 700 meters above the sea level. It covers an area of about 360000 square meters. It is the highest and largest palace complex in the world and hence hailed as "the pearl on the world roof". Potala Palace is the masterpiece of Tibetan buildings and the gem of ancient Chinese buildings, and it is also irrefutable evidence of the solidarity of all ethnic groups and the unity of the nation.