Introduction to Wangdue Phodrang Dzong: Wangdue Phodrang Dzong (Wangdue Phodrang Dzong), also called Wangdue Phodrang Dzong. It is one of the oldest existing sects in Bhutan, and it is also the one with the least maintenance and repairs among the major sects. Legend has it that when people were choosing a site, they saw four crows flying in all directions, which was regarded as a good omen for the spread of Buddhism, so they decided to locate it here. This is also the place where the Wangdu Phodrang Chi Chu Festival is held every autumn.