Tongsa Dzong introduction: Tongsa Dzong is one of the twenty dzongkhag in Bhutan. It was built in 1648 by Ngawang Namgyal based on the mountains. It is located in the east-west military The fortress stands on the edge of a canyon on a mountain 2,200 meters above sea level. Visible from all angles, Trongsa effectively controls the entire region. In ancient times, the king was on top of the city gate, and all business travelers had to pay taxes through the city gate before they could pass.