The monarchy institution in Bhutan observes a tradition where the Kings serve as the Trongsa Governor prior to ascending to the throne.
The fort was built in 1648. It served as the office of the Governor of Trongsa. In the 19th century, the Governor ruled the entire eastern and central Bhutan from Trongsa Dzong. The monarchy institution in Bhutan observes a tradition where the Kings serve as the Trongsa Governor prior to ascending to the throne. Trongsa Dzong is one of the biggest Dzong in the country.