Rem Koolhaas (Rotterdam,1944) studied architecture at the AA in London--where he went on to become a lecturer--and at the IAUS in New York, during Peter Eisenman's time there. Koolhaas has always been connected with the theory of architecture, as lecturer at the innovative AA, as a speaker, and with his published work: Delirious New York, a retrospective manifesto for Manhattan (1978) and the recent S, M, L, XL (1995). In 1972 Koolhaas set up the OMA (Office for Metropolitan Architecture), whose name clearly expresses the planning intentions of the team, comprising Koolhaas, Elia and Zoe Zenghelis, and Madelon Vriessendorp.