This lamp was created exactly in 1962, by Achille and Pier Giacomo Castiglioni, and its name is “Arco”. It is produced by Flos. It immediately became an icon and a symbol of design during those years. Its adjustable shape is due also to a marble parallelepiped of 65 kg, which forms the basis of the whole lamp. The curved stem is composed of three stainless steel parts. The key word for this object is certainly simplicity.