Trongsa Dzong is the largest dzong fortress in Bhutan, located in Trongsa in Trongsa district, in the centre of the country. It was the seat of power over central and eastern Bhutan and the vanguard of the warriors. All the Kings of Bhutan first invest as the Trongsa Penlop before ascending the Raven Crown throne. Built on a spur overlooking the gorge of the Mangde River, a temple was first established at the location in 1543 by the Drukpa lama, Nagi Wangchuk son of Ngawang Chhojey.
This strategically placed structure is the first sight long before reaching Trongsa. The Dzong is the massive structure with many levels, which slope down the contours of a hill on which it perches. Because of its highly strategic position as the only connecting route between east and west, the Trongsa Penlop was able to control the whole eastern region effectively.
It is in this Dzong the annual Trongsa Festival is performed during December or January. The intricacy of its maze of buildings on successive levels is clearly visible from the town. Beyond any doubt its size, design and position make it the most impressive Dzong in Bhutan. It is one of the most aesthetic and magnificent works of traditional Bhutanese architecture.
It is also a major monastic complex, with around 200 monks. During the summer months, the monastic community often relocates to Kurje Monastery in the Bumthang Valley. It contains a notable printing house, responsible for the printing of many religious texts in Bhutan. The dzong has since been repaired on several occasions; it was damaged during the 1897 Assam earthquake and underwent extensive renovation in 1927 and 1999. This is a must visit place of central Bhutan, as it offers a great experience of cultural and historical mixture of country.