This watchtower, which once guarded Trongsa Dzong from internal rebellion, stands on a promontory above the town. It was built by Chogyal Minjur Tempa, the 1st Governor of Trongsa in 1652. It has four observation points resembling Tiger, Lion, Garuda, and Dragon.

Climb up the path to visit Ta Dzong, which now houses a shrine dedicated to the epic hero, King Gesar of Ling. A visit to this former watchtower provides visitors with an insight into the significance of Trongsa in Bhutan’s history. As of date the Ta Dzong of Trongsa is the most fascinating museum of the nation.