Researcher at the Instituto de Investigaciones Estéticas of the Universidad Nacional Autónoma de México. Involved in many aspects of architectural history and criticism, being a co-founder and director of the Comité International des Critiques d’Architecture (CICA). Active in the field of the protection of the 20th Century architectural heritage as member of DOCOMOMO and ICOMOS. Member of the Academia de Artes, 1991. Jean Tschumi Prize of the International Union of Architects, 2011. Author of various books on Mexican and Latin American 20th Century Architecture amongst them: Arquitectos contemporáneos de México, 1989; Luis Barragán. Búsqueda y creatividad, 1996; and Arquitectos Iberoamericanos Siglo XXI, 2006. Since 2020, in charge of the Central Campus of the National University, a World Heritage Site, UNESCO.