The Pórtico de la gloria is a landmark among outstanding works of art. Its beauty and mystery have captivated pilgrims on the Camino de Santiago across the ages and have given rise to all sorts of studies (artistic, historical, theological, and even musical).Now we can examine this original creation - full of enigmas for modern man - and try to unravel its meaning: what did its authors want to transmit? For whom was it intended? What does it tell us today? Maestro Mateo's genius goes beyond the interpretations that up to now have described the Pórtico. This book reveals that the Apocalypse is not the only source of interpretation for the Pórtico, and that scene on the central tympanum does not represent the moment of the Final Judgment.