An exploration of the main sights of Trongsa includes the largest dzong, or fortress, in Bhutan, the Trongsa Dzong and the Ta Dzong watchtower. Built in 1647, Trongsa Dzong was the seat of power over central and eastern Bhutan during the reign of both the first and second kings of Bhutan. Ta Dzong, or the watchtower, once guarded the main fortress from any rebellion from its elevated position above the town. Today this building is a fascinating museum that represents a tasteful blend of tradition and modernity. Items on display include a sacred image of Sung Joenma Dorji Chang, self-pronounced Vajradharna; a bronze statue of Pema Lingpa, made by himself; and a number of centuries old treasures such as dance and ritual costumes and objects, ancient prayer books, paintings, scrolls and textiles.