Tibet lies on the Qinghai-Tibet Plateau of the southwest border of China. The average height of the whole region is more than 4,000 meters above sea level, for which Tibet is known as "Roof of the World". The highest peak of Tibet, also the highest in Himalayas and in the whole world, is Everest Peak, which is as high as 8,846.27 meters above sea level.Although a part of China, Tibet has a unique culture of all there own. It is mainly inhabited by Tibetans, a minority nationality of old and mysterious people. Tourist attractions include the Potala Palace in Lhasa, Jokhang Temple, and a number of Buddhist sacred places.