Nathaniel Walker: Classical Roof Gardens in the Modern Metropolis Before 1939

Lecture presented at the 1st International Conference on 20th-Century Classical Architecture, held from February 19 to 21, 2026, at the School of Architecture of the Universidad Politécnica de Madrid (ETSAM–UPM). The Conference was organized by the Traditional Building Cultures Foundation and the School of Architecture of the Universidad Politécnica de Madrid (ETSAM-UPM), with the support of the Richard H. Driehaus Foundation, the Master’s Degree in Real Estate Business Management (MDI-UPM), the Department of Architectural Composition (DCA- UPM) and the Degree in Interior Design (UPM), and the collaboration of INTBAU Spain.