is the first Tibetan building, founded in 127 BC for their first King, Nyatri Tsenpo and it had been used as the palace by the Numbers of Tibetan Kings. According to the legend, Nyatri Tsenpo is said to be descended from heaven and he was greeted by some herdsmen when they were grazing their animals because the herdsmen found Nyatri Tsenpo as a complete special good looking man, totally differed from them so they respected him as their king and carried him on their neck and named Nyatri Tsenpo, meaning neck throned king. Nevertheless, today the Yumbu Lhakang serves as a chapel and it is inhabited by 5 monks who are taking care of the chapels.