Trongsa

Trongsa Dzong, the largest dzong in Bhutan, spills down a steep spur above the Mangde Chhu gorge. Because the only east–west road once passed directly through its courtyards, whoever held Trongsa controlled the country — and the first two kings of Bhutan both served as Penlop (governor) of Trongsa before ascending the throne. The tradition continues: the Crown Prince is still invested as Trongsa Penlop.

Above the dzong, the Ta Dzong watchtower houses the Royal Heritage Museum, with royal artefacts and a fine collection of statues.