Trashigang Dzong is one of the largest dzong fortresses in Bhutan, located in Trashigang in Trashigang District of Bhutan. The fortress was built in 1659 to defend against Tibetan invasions. Trashigang Dzong is organized around a rectangular courtyard protected by battered walls, with a single entrance on a south-facing front. It continues to house a thriving monastic community, as well as the central administration for Bhutan's Trashigang District.