The choir, whose vaulted ceiling has great affinities with that of the Jerónimos, is illuminated by four large windows with side columns with a Gothic base and an ornate shaft with trunks and root figurines. An oculus to the west, internally framed by ridges symmetrically excavated, completes the illumination. The chair that leans against the walls, comes from the choir of the Convent of Santa Joana, which existed in Lisbon and placed here in the twenties of the twentieth century, since the primitive, joint work of the Flemish Olivier de Gand and Fernão Munõz, was destroyed during the French invasion in the early 19th century.