Jambay Lhakhang, located in Bumthang is one among the 108 Buddhist temples built in the 7th century by the Tibetan King Songtsen Goempo and is one of the oldest temples in the Kingdom. The 108 temples were built because the King was destined to build 108 temples known as Thadhul- Yangdhul (temples on and across the border) in a day to subdue the demoness that was residing in the Himalayas. Chakar Gyab renovated the temple in 8th century.
In the 19th century, Gongsa Ugyen Wangchuk constructed the Dus Kyi Khorlo (Kala Chakra- Wheel of Time) inside the temple. This was done to commemorate his victory over his rivals Phuntsho Dorji of Punakha and Alu Dorji of Thimphu after the battle of Changlimithang in 1885.
The Chorten lhakhang was built by Ashi Wangmo, the younger sister of the second king of Bhutan.
The name of the temple is derived from one of the main relic of the temple, Jowo Jampa (Maitreya).
Jambay Lhakhang drub is one of the most spectacular festivals observed in Bhutan. The highlight of the festival is the fire ritual that is held in the evening where crowds gather to witness the ritual together with the naked dance. This is done to purify sins and portend a good harvest.
Prakar Duchhoed is the annual festival is celebrated at the Prakar Lhakhang in Chhummi gewog in Bumthang. Several kinds of mask dances are performed during the festival. The festival is celebrated to honor Lama Thukse Dawa, one of the sons of the 15th century Buddhist master, Terton Pema Lingpa. Lama Thukse Dawa who was one of the greatest Buddhist masters to be ever born in Bhutan.