Inaugurated in 2012, the Main Library of the BUAP is a monumental modern building which has a capacity for three thousand readers who are able to consult 110 thousand books and more than 113 thousand digital works 24/7. The building was designed by the architect Manuel Sandoval Delgado who documents the first drawings, the initial sketch, the architectural sketches, the zoning, the architectural project, photographs of the construction process and finished work, testimonials of collaborators, as well as the use of the spaces. The book has a methodological, didactic and pedagogical approach, which allows us to understand how to start an architectural project that culminates in the use of space.