From the Wikipedia page [1]
Métropole Nice Côte d'Azur is the métropole, an intercommunal structure, centred on the city of Nice. It is located in the Alpes-Maritimes department, in the Provence-Alpes-Côte d'Azur region, southeastern France. It was created in December 2011, replacing the previous Communauté urbaine Nice Côte d'Azur and the communautés de communes of les stations du Mercantour, La Tinée and Vésubie-Mercantour. In 2013 the commune Coaraze left the métropole, and in 2014 the communes Bonson, Le Broc, Gattières and Gilette joined it.