 In the same wall, two large windows of triple mixtilineal arc with shutters on their keys are escorted by the entrance, thanks to which the inner space of the royal rooms is illuminated.Once the space of the gallery is crossed, several rooms are arranged that precede to the great Throne Room, that are denominated "rooms of the lost steps".These are three small rooms of square plan communicated to each other by big windows shut with lattices that give to the Patio de San Martín, and that served as waiting rooms for those who were to be received in audience by the kings.