Achille Castiglioni, Pier Giacomo Castiglioni. Arco Floor Lamp. 1962
Not on view
Flos S.p.A.
Marble and stainless steel
(maximum): 95 1/8 x 84 x 12 1/4" (241.6 x 213.4 x 31.1 cm) (minimum): 95 1/8 x 81 1/2 x 12 1/4" (241.6 x 207 x 31.1 cm)
Gift of the manufacturer
Object number
Architecture and Design
This work is not on view.
Achille Castiglioni has 19 works online.
Pier Giacomo Castiglioni has 12 works online.
There are 8,569 design works online.

The Arco Floor Lamp solves a practical problem: the need for an overhead lamp that does not require drilling a hole in the ceiling. A street lamp inspired the Castiglioni brothers’ design, demonstrating Achille Castiglioni’s motto that “design demands observation.” By inserting a steel arch into a heavy marble pedestal, the designers created a lamp that is able to illuminate objects eight feet away from its base—far enough to light the middle of a dining table.

Gallery label from Shaping Modernity 1880–1980, March 28, 2012–September 8, 2013

Additional text

Castiglioni designed more than sixty lamps and a host of other objects, working from 1945 until 1968 with his brother Pier Giacomo and then on his own. One of their best-known lamp designs, Arco, came about through the challenge of a practical problem: how to provide a ceiling lamp that would not require drilling a hole in the ceiling.

Castiglioni's motto, "design demands observation," proved accurate, for it was a street lamp that gave the brothers the inspiration for this fixture. Street lamps, affixed to the ground, have a shape that enables them to project their light beams several feet away from their bases.

In this domestic adaptation, the Castiglionis were able to illuminate objects eight feet away from the lamp's base—far enough to light the middle of a dining table—by inserting a steel arch into a heavy Carrara marble pedestal. They studied the span of the arch to be sure that its form would provide enough space for one person carrying a tray to pass behind someone sitting at the table. In addition, they made sure the heavy lamp could be moved by two people by inserting a broomstick through the hole in the marble base. Arco is a prime example of the Castiglionis' rigorous approach to design solutions.

Publication excerpt from The Museum of Modern Art, MoMA Highlights, New York: The Museum of Modern Art, revised 2004, originally published 1999, p. 296

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