Oct. 22-23 Bumthang Valleys Perched above the Jakar valley, is the Jakar Dzong, the “Fortress of the White Bird” built in the 17th century. Bumthang is one of the most beautiful and sacred areas of Bhutan, known for the visits of Guru Rinpoche when he was bringing Buddhism from Tibet to Bhutan in the 8th century. The open and wide valleys filled with fields and farmers, and the gentle slopes of beautiful mountains dotted with many sacred temples and monasteries, make for an unforgettable experience.