The consortium headed by Bouygues Bâtiment Ile-de-France constructed a new iconic cultural facility in Boulogne-Billancourt on the site of the former Renault plant. The only facility of its kind, this unique design by architect Shigeru Ban comprises a large modular concert hall with the capacity to accommodate audiences of 6,000 and up to three different events in the same day, a 1,100-seat auditorium dedicated to classical music, a training centre and recording studios, all linked together by a large foyer area containing restaurants and shops. A hub for all genres of music, the City will also serve as a public promenade along the banks of the River Seine. The project is awarded labels in recognition of its environmental excellence: HQE Excellence (High Environmental Quality), BiodiverCity® label and High Quality Usage level 3.