Achille Castiglioni concluded his studies at the Politecnico di Milano in 1944. From there, he embarked on a career in design and architecture at his brothers Livio and Pier Giacomo's studio, situated in Piazza Castello, Milan. Castiglioni's professional endeavors spanned an array of disciplines, including urban planning, architecture, exhibition design, and product design. In 1944, he collaborated with his brothers for the VII Triennale di Milano, where they unveiled the "RR126", a radio system conceived for mass production. Castiglioni's illustrious career is characterized by a multitude of notable works. These include innovative seating designs such as "Mezzadro" and "Sella" from 1957, the "Sanluca" armchair introduced in 1959, the "Luminator" (1955) and "Arco" (1962) floor lamps, and the "Taccia" table lamp, which graced the design world in 1962.