According to legend, Jampa (Jambay) Temple or Temple of Maitreya in Bumthang is said to be one of the 108 temples built by the Tibetan King Songtsen Goenpo in 659 AD on a single day. Like Kyichu Lhakhang, it is said that Tibetan King Songtsen Gampo built a series of temples in a single day throughout the Himalayas to pin down a demoness who was obstructing the spread of Buddhism.Four temples were built to pin down her shoulders and hips; four more on the elbows and knees; and four to hold down her hands and feet. It is believed that Jambay Lhakhang was built to pin down the left knee of the demoness. Thus, Jambay Lhakhang remains one of the oldest and most sacred temples in Bhutan.The ancient temple, Jambay Lhakhang sits on a plateau by the Bumthang Chhu River. The temple has been repaired and rebuilt several times over the years. The one-storey temple is also the venue for the popular Jambay Lhakhang Drup festival held annually.