The Punakha Dzong is placed between the Pho Chhu and Mo Chhu rivers in the Punakha valley in Bhutan. Constructed in 1637-1638, this second oldest and second largest dzong in Bhutan. Sacred relics of the southern Drukpa Lineage of the Kagyu school of Tibetan Buddhism are found in the dzong. Today, the government of Bhutan owns the dzong and is used for religious and civil administration.