Ḥasan Fatḥī (Hassan Fathy; 1900-89) remains the best-known Egyptian architect of the twentieth century, and the one with the widest international impact. This is largely due to his publication, in multiple editions and languages commencing in 1961, of the book Architecture for the poor . In this work, he espoused the values of traditional construction techniques that were not only imbued with an innate beauty deriving from craftsmanship but were also economically and environmentally sustainable. He was profoundly influenced by mudbrick vaulting methods he discovered at ancient sites as