Zhemgang Dzong is beautifully situated atop the peak of a triangularly shaped ridge that rises sharply from the Mangdechu, facing the village of Trong and the town of Zhemgang. Lama Zhang Dorje Drakpa, a renowned scholar-sage of the Drukpa Kagyu school of Buddhism is credited with the founding of the Dzong in 1655.
In 1963, when Zhemgang became a separate dzongkhag, the dzong was renovated under the Third King. The entire dzong area comprises of three main structures: the dzong, residence building of the district monk-body, and a two-storied administrative building. The dzong has a wide courtyard that is estimated to accommodate around one thousand people.