El Número de Dios / God's Number

"The first half of the 13th century was a time of women and cathedrals, of poetry worshipping, love, and intelligence. Its most sublime artistic manifestation was the gothic cathedral, where beauty, civic pride, and Christian spirituality were divinely combined. It was also a time of religious persecution that forced characters like the protagonist of God's Number, Teresa Rendol, into hiding and silence. Daughter of a Cathar master painter, and being a painter herself from a very young age, her eventful life led her to be a privileged witness to the construction of the cathedrals of Burgos and Leâon and to know one of the best-kept secrets, transmitted from generation to generation among the guild of architects, the so-called "God's Number," the secret on which the construction of the cathedrals was based."--Publisher description.