The Ancestral Temple of the Founder (Vietnamese: Triệu Tổ miếu, chữ Hán: 肇祖廟) was built either in 1804 or during the third year of Gia Long's rule to commemorate Duke Nguyễn Kim who was the ancestor of Nguyễn dynasty.

Its design was inspired by Ming's architecture, most notably with a rectangular perimeter that represents the character vương (王), three main doors facing southward.

The interior of the temple consists of an altar, on which two plaques of the founding ancestor and his lady are placed.

[2] A poem in Literary Chinese can be found inscribed on the ceiling, with its content praising the following merit of Duke Nguyễn Kim, The temple was badly damaged during the 1968 Tet Offensive.

[3] However, this "newly restored" temple was panned by the press for being too flashy and unaesthetic, given the original intent of how Huế's art works should look during the Golden Age.