<P>Foreword by Adrian Forty.</P><P>The Algarve is not only Portugal¿s foremost tourism region. Uniquely Mediterranean in an Atlantic country, its building customs have long been markers of historical and cultural specificity, attracting both picturesque driven conservatives and modernists seeking their lineage. Modernism, regionalism and the ¿vernacular¿ ¿ three essential tropes of twentieth-century architecture culture ¿ converged in the region¿s building identity construct and, often the subject of strictly metropolitan elaborations, they are examined here from a peripheral standpoint instead.</P><P>Drawing on work that won the Royal Institute of British Architects President¿s Award for Outstanding PhD Thesis in 2013, <I>Algarve Building </I>challenges the conventional inclusion of Portuguese modern architecture in ¿Critical Regionalism¿ narratives. A fine-grain reconstruction of the debates and cultures at play locally exposes the extra-architectural and widely participated antecede