In 1951, Daga Trashi Yangtse Dzong was built on a ridge overlooking a valley by Drugda Namgyel with a command from Zhabdrung Ngawang Namgyel to bring the area under control and to defend the country from the invading armies from south.

Daga Trashi Yangtse Dzong is one of the oldest Dzongs in the country. Among other sacred relics, the Dzong houses a buffalo horn measuring about 4’5”. The horn is believed to have been discovered by Daga Penlop Tempa Thinley in early 16th century.