Sergio Los (born 1934 in Marostica, Veneto) is an Italian architect and thinker. He is considered one of the main interpreters of the Regional Bioclimatic Architecture, a design philosophy developed during the seventies (1972–1979) at the University Iuav of Venice under the pressure of the environmental and energy crisis. He developed a locally rooted architecture that adapts to the regional circumstances and uses the natural energetic potentials, especially solar energy. Already in 1980 he was extensively contributing to the organisation PLEA (Passive and Low Energy Architecture ), that promotes sustainable architecture on a worldwide scale. Through his longtime educational work he has shown many young architects his innovative ideas and many more architecture students with his landmark publications so that there is hope that even more architects and urban planners will use his ideas in the future. Biography The early years His artistic formation took place at the University Iuav of Venice with Carlo Scarpa. Between 1964 and 1971 he was involved in a collaboration with Carlo Scarpa, working at the University Iuav of Venice and following many projects in his office. He wrote Carlo Scarpa Architetto Poeta, published in 1967, which was at that time the first book about Scarpa’s architecture. Involved in the Design Process Theories, he introduced in Italy the ideas of Christopher Alexander translating his Notes on the Synthesis of Form 1967, and the searches of the Cambridge University Martin Centre, editing and translating the book of L. March and P. Steadman The Geometry of Environment, 1974. The Regional Architecture Experience Between 1972 and 1979, he develops a regional bioclimatic approach to multi-scale architecture that drives him into designing and constructing some buildings and city plans. Through an experimental design and building activity, he deepen the concept of a sustainable resilient urban fabric, which is based on the network of civic architecture, aimed to produce a local microclimate in the open outdoor spaces. Having tested some realized projects his design solutions were confirmed and transferred through handbooks. He is involved in the development of lectures and a contribution to The Geography of Architecture (The Phaidon Atlas of Contemporary World Architecture). A Knowledge Civic Architecture In the last twenty years, he is involved in increasing the city’s communicative action, compared to the prevailing instrumental action of the actual metropolises. In his view the city is considered as a communicative system, analogous to the language and to other