The Church of Jesus (its full name is Church of the Most Holy Name of Jesus in Argentina) is the mother church of the Society of Jesus; it houses the tomb of its Founder, St. Ignatius of Loyola.
In the adfiacent building (separate entrance) there are the little rooms of St. Ignatius of Loyola. The rooms of St. Ignatius are preceded by a corridor with perspective decoration by Andrea Pozzo and frescoes by Borgognone.