Thay Pagoda is a sacred and ancient scenic spot, located in Sai Son commune, Quoc Oai district, Hanoi. The place is closely associated with the name of Zen Master Tu Dao Hanh, who has made great contributions to the people. He is a monk, a Buddha, a King and is considered by the people to be the founder of water puppetry and a Saint. A large-scale festival is held annually at the pagoda to commemorate the Zen Master, always attracting a large number of local people and visitors from far and wide.