Lhasa, the world's roof ridge holy site, has a history of more than 1300 years. Located in the Zalalupu Grottoes of Lhasa Yaowang Mountain, this cave-style temple is the only grotto in Tibetan history that can be traced back to the historical era of Tubu. Not only has foreign cultural factors added to Tibet's local culture, but also a beautiful piece in the history of ancient cultural exchanges. It integrates and carries the artistic essence of different cultures from all sides. There are several walls and a grotto, which is a long history and worth visiting. Tickets are $20 and often no tickets are charged.