The statues in the west tower are the work of José Zacarías Cora and represent Pope Gregory VII , Saint Augustine , Leander of Seville , St. Fulgentius of Écija , St.Francis Xavier , and Saint Barbara . The statues in the east tower are by Santiago Cristóbal Sandoval and depict Emilio , Rose of Lima , Mary ( mother of Jesus ) , Ambrogio , Jerome , Philip of Jesus , Hippolytus of Rome , and Isidore the Laborer .