This 19th-century cathedral shelters the Virgen del Valle, patron of Catamarca and one of northern Argentina’s most venerated images. Her back is to the church: you can get a look at her face by ascending to the Camarín, a chapel accessed down the side of the building, decorated with stained-glass panels telling her story. On Av República round the corner, a slick new museum is only of interest to serious devotees of the Virgin.