State Religion : Mahayana Buddhism
In BHUTAN, Buddhism occurred in the seventh century A.D., when Tibetan king Srongtsen Gampo (reigned A.D. 627-49), a convert to Buddhism, ordered the construction of two Buddhist temples, at Bumthang in central Bhutan and at Kyichu in the Paro Valley. Buddhism replaced but did not eliminate the Bon religious practices that had also been prevalent in Tibet until the late sixth century. Instead, Buddhism absorbed Bon and its believers. As the country developed in its many fertile valleys, Buddhism matured and became a unifying element. It was Buddhist literature and chronicles that began the recorded history of Bhutan
In A.D. 747, a Buddhist saint, Padmasambhava (known in Bhutan as Guru Rimpoche and sometimes referred to as the Second Buddha), came to Bhutan from India at the invitation of one of the numerous local kings. After reportedly subduing eight classes of demons and converting the king, Guru Rimpoche moved on to Tibet. Upon his return from Tibet, he oversaw the construction of new monasteries in the Paro Valley and set up his headquarters in Bumthang. To these day, you would see the treasure, and all the monasteries well preserved.