The beauty of Yen Tu consists in the majesty of its mountains mingling with the ancient and solemn quietness of its pagodas, shrines and towers.

Under the Ly Dynasty, Yen Tu held the Phu Van Pagoda with Yen Ky Sinh as its warden. But Yen Tu only really became a Buddhism Centre when Emperor Tran Nhan Tong surrendered his throne to establish a Buddhist sect called Thien Truc Lam and became the first progenitor with the religious name Dieu Ngu Giac Hoang Tran Nhan Tong (1258-1308).
He ordered building hundreds of constructions, large and small on Yen Tu Mountain for leading a religious life, sermonizing. After his death, his successor, Phap Loa Dong Kien Cuong (1284 - 1330) the second progenitor of Thien Truc Lam, compiled a set of book “Thach that ngon ngu” and ordered the building of 800 pagodas, shrines and towers with thousands of value statues throughout his 19-year religious life. Some famous pagodas are Quynh Lam, Ho Thien. There is the third progenitor of Thien Truc Lam, Huyen Quang Ly Dao Tai (1254 - 1334), in the sermonizing centre of Phap Loa.

Passing through to the Le and Nguyen Dynasties, Yen Tu was still the focal point of Vietnamese Buddhism, and was often subject to restorations. It is a meeting place of different styles from various historic periods: visible in the many different designs and decorations that ornate its constructions.