Nhan Tower was worship place of ancient Cham people in dated in the late 11^st to the early 12^nd centuries. The tower is 20m high; each side of the foot tower is 11m long. The middle gate sharp is with monsters on the top. This top is special one because it was harmoniously combined with the pyramidal symbol with linga symbol; one of Cham's worships. During the French domination, the tower was nearly ruined. At the end of the year 1960, the tower was rebuilt by the administration of Diem's regime. Nowadays, there is only a flat stone with the high of 1,30m and lotus flower carved at the foot of the stone. At the foot of Nhan Mountain, there is another stone on which were 3 ancient letters (the same Phan letter).The stone has square shape; each side is 5m wide. Nhan Tower is a symbol for the architectural art of Cham in Phu Yen Province.