The Charterhouse of Our Lady of the Fountains, also known as the Charterhouse of Monegros, is a former monastery located in the municipality of Sariñena, in the region of Monegros, province of Huesca, Aragon. Founded in 1507 by the Counts of Sástago, Beatriz de Luna, and Blasco de Aragón, it is the first Charterhouse built in the Kingdom of Aragon.
The current monastery, built in the 18th century, is an impressive architectural complex in the late Baroque style. It is notable for its mural paintings by Friar Manuel Bayeu, Goya's brother-in-law, depicting scenes from the life of the Virgin Mary, women of the Old Testament, and the cardinal virtues.