He had dedicated himself to experimenting on industrial products with his brothers. Their interests were directed towards Urban Planning, Design/Architecture; they performed analysis and research on new forms, techniques and materials, aimed at developing a process of "integral design".
In 1969, he was nominated Professor of "Artistic Industrial Design"; he chaired the Faculty of Architecture in Turin until 1980 and taught until 1993 as Professor of "Industrial Design" at the Polytechnic of Milan.
In 1956 he was one of the founders of ADI (Association for Design Industry).
His works may be found in the following museums:
• Israel Museum in Jerusalem
• Vitra Design Museum in Weil am Rhein
• The Denver Art Museum
• Victoria and Albert Museum in London
• Design Museum in Prato
• Angewandte Kunst Museum in Hamburg and Cologne
• Kunstgewerbe Museum in Zurich
• Staatliches Museum für Angewandte Kunst in Munich
Achille Castiglioni died in 2002 at he age of 84 years.