One obvious aspect of the relationship between architecture and mathematics is the nature of the actual places designed by architects for the mathematical community. The School of Mathematics of the Città Universitaria was designed by Giò Ponti. Claudio Presta examines Ponti’s design to see how architecture can create an appropriate space for doing mathematics. What is the meaning, if there is one? What are the motives that drove the architect to create a building expressly for the School of Mathematics and not a simple/complex building in which the School could simply be housed? Ponti provides an answer by following the shape of the Greek theater for one part of the building, while the dimensions of the other part tend towards the Golden Section.