
Punakha Dzong from Northwest with Mo Chhu in foreground
Built by Zhabdrung Ngawang Namgyal in 1637-38, Punakha’s dzong is the second oldest and second largest of Bhutan’s dzongs. It’s official name “Pungtang Dechen Photrang Dzong” means palace of great happiness or bliss. Until the capital was moved to Thimphu, this was the administrative center of Bhutan; the clergy still winter here.

Punakha Dzong with Mo Chhu in foreground
The dzong is beautifully situated at the confluence of the Pho (Father) Chhu and Mo (Mother) Chhu.
Punakha Dzong from Pho ChhuOver the centuries there have been additions and renovations, some necessitated the 1897 earthquake and numerous fires, the last of which was in 1986. In addition to the 1986 fire, many of the wooden structures within the walls had been allowed to deteriorate over the years. Therefore, in the late 1980s the king ordered a complete reconstruction. After a significant amount of work had been done, the foundation was determined to be inadequate, and much of the work had to be redone after the foundation was strengthened. Then, in 1994, a massive flash flood occurred on the Pho, and additional restoration work was added to the already long list of projects, along with flood control. If my interpretation of this website about the dzong’s reconstruction is correct, work was not completed until 2004.
Punakha Dzong–Southeast Corner
Work continues on flood control though, and even more is planned. The problem is GLOFs—Glacial Lake Outburst Floods—at the headwaters of the Pho. According to Pelden, the Pho once flowed as close to the dzong as the Mo still does. Plans call for the confluence to be moved 900 feet downstream.

Dredging the Mo Chhu