Trongsa also boasts an impressive museum housed in Ta Dzong, the watchtower of Trongsa. The museum is dedicated to the Wangchuck dynasty and is a good place to learn about the history of the kingdom and the significance of Trongsa in it. As of date the Ta Dzong of Trongsa is the most fascinating museum of the nation.

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.