The ancient Ta Phin Monastery, located at the foot of the mountain, was built in 1942. It used to be a place of practice for 12 ascetic nuns of the Congregation of the Sisters of the Catholic Church of Christian Conversion. In 1945, the delegation left Hanoi and the monastery was abandoned to the present day. In general, the monastery consists of a five-room house with the main direction facing west, three stories high, which is the accommodation and activities of the nuns. All now there is no roof, leaving only the walls of stone covered with moss over the years, and sometimes among those cold, gray stones, suddenly there is a sprouting bud, causing people we must widen our eyes in surprise.