The Ciudad Abierta at Ritoque in Chile founded in 1970 is closely linked to the PUCV Faculty of Architecture in Valparaiso. In creating the works built in this "city" a pedagogy was tried out with a particular approach to and construction of the architecture that has maintained its validity and fascination for many years. The teachings of the founders of this school still constitute a provocation for all those interested in architecture as well as those who practise it. In particular, the figure of Alberto Cruz Covarrubias, recently deceased, still seems able to stimulate imagination and creativity through his writings and drawings, in line with what he believed in: "ultimately, the only thing a professor can do for his students is to give an example".