Truc Lam Tay Thien Zen monastery, built on the foundation of Thien An Zen ancient temple, is a monastery of the Truc Lam Yen Tu Zen group, and is located in Dai Dinh commune, Tam Dao district, Vinh Phuc Province, about 85 km from Hanoi to the west. Along with Truc Lam Dalat, Truc Lam Yen Tu Zen monasteries, Truc Lam Tay Thien is considered one of the three largest Zen monasteries in Vietnam today.