The Escorial Beatus (Escorial, Biblioteca Monasterio, Cod. & II. 5) is a 10th-century illuminated manuscript of the Commentary on the Apocalypse by Beatus of Liébana. The manuscript was probably created at the monastery at San Millán de la Cogolla. There are 151 extant folios which measure 395mm by 225mm. The manuscript is illustrated with 52 surviving miniatures. Of the original illustrations within the commentary, twenty-seven of the original illustrations are left.[1] Compared to other illuminated manuscripts, including other illuminated manuscripts at the time, the Escorial Beatus is slightly smaller in comparison. The Escorial Beatus is one of the most well-known illuminated manuscripts that make use of the Mozarabic style of art.[1] This would later lead to influence other well known artistic styles, including styles like Romanesque and Carolingian.