In the morning, visit Jakar Dzong, the Castle of the White Bird. When lamas gathered in 1549 to choose a site for a monastery, a large white bird rose and settled on a hill spur, taken as an auspicious omen; the present structure dates from 1667, with a circumference of over 1,500 metres, and its official name is Yuelay Namgyal Dzong.
Continue to Jambay Lhakhang, one of Bhutan's oldest temples, believed to have been built in 659 AD by the Tibetan king Songtsen Gampo on the same day as Kyichu Lhakhang in Paro, then Kurjey Lhakhang, among the most sacred sites in Bumthang, named for the body imprint of Guru Rinpoche: kur means body, jey means imprint.
After lunch, visit Tamshing Lhakhang, established in 1501 by the saint Pema Lingpa, who was born in Bumthang's Tang valley; also known as Tamshing Lhendup Chholing, the Temple of Good Message, it is one of the most important Nyingma monasteries in Bhutan. Finally, visit Mebar Tsho, the Burning Lake, where Pema Lingpa is said to have leapt into the water holding a lit butter lamp and surfaced with sacred treasures, the lamp still burning; it remains an important pilgrimage site. In the evening, stroll through Bumthang town and its shops. Dinner and overnight at a hotel in Bumthang.