Designed by Wilmotte et Associés, with a detailed brief to 'design a modern, sustainable building that harnesses all the potential of steel from top to bottom', ArcelorMittal's new headquarters, ArcelorMittal Kirchberg, is a showcase for the use of steel in sustainable construction. The building, which will be commissioned in the first quarter of 2026, incorporates 10,000 tonnes of ArcelorMittal steel, mainly produced in Luxembourg from recycled steel. The beams are made from XCarb® recycled and renewably produced steel, which has a carbon footprint that is seven to eight times smaller than conventional steel, representing a saving of more than 10 tonnes of CO2 per beam. In this way, ArcelorMittal Kirchberg serves as an exemplar of how low carbon-emissions steel can be used in construction.