Cartoixa d'Escaladei, or Chapterhouse of Scala Dei, was a monastery of the Carthusian order in the southern Catalonia.

According to legend, when the Carthusian monks came into the region they met shepherd who told them that he had seen in a vision angels ascending a stairway into heaven into the clouds of the summit of nearby Montsant.

[2] By 1218 the monks were well established and were gifted by Jaume I dominion and jurisdiction over the nearby villages of La Morera, Gratallops, Torroja, Porrera, Poboleda and Vilella Alta.

The physician Arnaldus de Villa Nova dedicated one of his treatises to the prior and monks of Scala Dei and bequeathed some of his books to them upon his death in 1305.

[4] Alonso Tostado, a leading scholar of the 15th century, was a novice here in 1444 before he was called by king Juan II to become his advisor.

[1] The surviving buildings were sold at an auction in 1843 by five families who founded in 1844 a company to produce wine, the Sociedad Agrícola La Unión.