The legend has it that Vietnamese people are descendants of Father Lac Long Quan and Mother Au Co.

After a 3-year-and-10-month pregnancy, Mother Au Co gave birth to 100 eggs which hatched out 100 sons. The father and the mother took 50 sons each to the sea and the mountain respectively.

Located in Van Mountain, the temple consists of the sanctum worshipping Mother Au Co, western and eastern pavilions, house of stele, stone pillars, three-door gate, etc. The temple was decorated similar to patterns on Dong Son bronze drum.