Journal · Trongsa
Trongsa Dzong
The largest dzong in Bhutan, stepping down a ridge above a gorge in the middle of the country.
The story
In 1543 Ngagi Wangchuk, the Zhabdrung's great-grandfather, built a small temple here after seeing a light on the ridge. The dzong was built in 1647 and enlarged from 1652. For centuries the only road from west to east ran through it, so whoever held Trongsa held the country.
The Wangchuck kings rose to power as governors of Trongsa, and by custom the Crown Prince is made governor of Trongsa before he becomes King. The dzong was restored from 1999 to 2004 with Austrian help.
Before you go
See it first from the viewpoint across the valley. The old watchtower above, the Ta Dzong, is now a museum about the monarchy.
Sources
Checked October 2026. Where sources disagree, we say so or leave the detail out. Opening times and rules change, so your guide confirms on the day.