Perched on top of Hongshan Mountain in the center of Lhasa, the capital of Tibet Autonomous Region, 3,650 meters above sea level, Potala Palace was first built in 641 by the Tibetan King Songtsen Gampo to greet his bride Princess Wencheng of the Tang Dynasty (618-907). It is a 13 story palatial architecture that is a 110-meter-tall. The palace also collected a large number of sculptures, murals, scripture and other valuable cultural relics. Besides, it is a famous Buddhist holy attraction and countless Tibetan Buddhist followers will gather in Potala Palace during festivals.