Achille & Pier Giacomo Castiglioni drew their inspiration for the Arco lamp from something they saw every day: a streetlight. Using commercially available parts, they set out to design a piece that was technically innovative and visually appealing—a lamp that was functional but wouldn’t need to be stepped around. They finished it with a marble base, knowing that the same weight would take up less space, allowing the Arco to live in—not take over—the room it illuminated. Arco is a design icon that has been in constant production since its debut in 1962. The modern arc floor lamp considered a design classic.