Leonardo Mosso was born in Turin in 1926, as son of the architect Nicola Mosso. In 1951 he graduated in architecture, four years later he left for Helsinki to work in Alvar Aalto’s office. In 1965–69 he was the co-signer of all the projects that the Finnish architect carried out in Italy. From 1961 Mosso taught as a professor of architecture at the Politecnico in Turin, and lectured at various universities, including the University of Karlsruhe. He cooperated with numerous influential figures of the 20th century, such as Le Corbusier, the designer Bruno Munari and the philosopher Vilém Flusser.