 He was a member of the American Philosophical Society, and a corresponding member of the British Academy, the Bavarian Academy of Sciences, the Accademia Olimpica, Vicenza, the Ateneo Veneto, the Accademia di San Luca in Rome and the Royal Society of Sciences in Uppsala.He gave the Slade Lectures at Cambridge in 1969–70.He received six honorary doctorates and was a Grand Officer of the Order of Merit of the Italian Republic, an honorary citizen of Padua, and received a Special Golden Lion Award at the Venice Biennale of Architecture of 2008.