When King Dinh built the country, this place was once considered the West town of "Hoa Lu tu tran" to protect the ancient Hoa Lu citadel. Temple of God Cao Son belongs to Bai Dinh pagoda mountain spiritual tourist area. It was said that Cao Son Dai Vuong was Lac General Vu Lam, the 17th son of King Lac Long Quan, when he was patrolling from Nam Linh to Thien Duong area, he found a tree species with flour used to make cakes instead of rice flour. The god taught and helped people make a living and also protected from destructive forces, so King Dinh allowed the people to build a temple to protect the capital from the west on Dinh mountain.

During the Ly Dynasty, National Master Nguyen Minh Khong chose this place as a place to build a Buddhist temple and pray for sentient beings. During his lifetime, he also took care of cultivating a medicinal garden to save the world, naming it "Sinh Duoc" and teaching people in the area how to grow and use medicinal plants to cure diseases and save lives. The reputation of the National Master of the Ly Dynasty - Saint Nguyen has been handed down with many legends, making the whole Hoa Lu - Bai Dinh area become a sacred, sparkling and colorful mythical area. color of Vietnamese folklore. Thus, Bai Dinh has not only a thousand years of history but also a thousand years of legend.

Experiencing many ups and downs. Hoa Lu - Bai Dinh is still the convergence of the mountain and river spirit of the nation's spirituality with the architecture of mausoleums and temples with traces of a golden citadel. Today, Bai Dinh pagoda cultural and spiritual tourist area has become a sacred spiritual symbol - the largest Buddhist spiritual center in Vietnam.