According to Sister Lúcia, it was here that the child Jesus and the Virgin Mary appeared to her in 1925-1926 and revealed to her the First Saturdays Devotion.

On the site where the sanctuary is located, there was a building from the early Middle Ages, of which traces of stonemasonry and a walled door with decorative reliefs have been preserved.

[7] In the 19th century, the building was the palace of the Arias Teijeiro family (Antonio and José, father and son), the latter being a Carlist politician and universal minister.

While in her room in this convent in Pontevedra two months after her arrival, on 10 December 1925, Sister Lucia had a vision of the child Jesus and the Virgin Mary with her heart surrounded by thorns.

[12][13][14] Pope John Paul II granted it the status of a sanctuary in 2000 on the occasion of the 75th anniversary of the apparitions.

On the ground floor, 15th-century semicircular arches supported by Tuscan half-columns frame the door and windows.

[4] The old medieval cloister, dating from the end of the 15th century, had semicircular arches supported by Tuscan columns.