 The headquarters of ArcelorMittal, the world's largest steelmaker, are located on the Place des Martyrs, across the Avenue de la Liberté.The square was laid out in the 1920s, after the German occupation of the First World War.Through the square run three radial paths, meeting at a point in front of the Arcelor headquarters, where a work by the British sculptor Henry Moore, depicting a mother and child, provides a focus.