Apart from Punakha Dzong, what makes Punakha a popular tourist attraction is the Punakha suspension bridge. It is built over the Po Chhu river. It is one of the longest suspension bridges in Bhutan, spanning 160 m. It connects Punakha town with Punakha Dzong. Draped with prayer flags, it is a delight for photographers. Walking on it will by far be one of your most adventurous experiences. Make sure to stop by here.