Since the beginning of the century, the field of architecture has fervently turned its attention to documenting the contemporary urban condition. Every city been has been examined as a repository of architectural concepts. Every city has been scrutinized as an urban manifesto. Every city has been recorded as a series of found objects. The Ordinary articulates a potential genealogy for this practice, and for the genre of books that derived from it. Organized around three conversations with the authors of seminal texts that documented the city--Denise Scott Brown on Learning from Las Vegas (1972), Rem Koolhaas on Delirious New York (1978), and Yoshiharu Tsukamoto on Made in Tokyo (2001)--this volume traces the history of these "books on cities" by examining the material they recorded, the findings they established, the arguments they advanced, and the projects they promoted. These conversations also question the assumptions underlying this practice, and whether in its ubiquity it still remains a space of opportunity.