Wangchulo Dzong in Haa is one of the newest, built in 1915 to replace a smaller structure. Unlike the other dzongs in the country, those were built on hilly terrain mainly to protect the valley from invading foreign enemies.
Wangchulo Dzong is located at the base of the Haa valley and it solely served as an administrative office for Haa dzongkhag Administration. It had a rage square structure with battered (inward-sloping) walls.