In este book, the way in which the architect configures the structure is studied. The relationship between the structure and what surrounds it. How structure manifests itself in architecture. But above all, we wanted to verify that the structure is algo m than a support. And we will do so by studying historical structures such as the Parthenon, the Sainte Chapelle, the Pantheon, the Palace of Charles V, St. Paul's Cathedral, the Alhambra and Hagia Sophia.