From the Wikipedia page [1]
Metropolitan Lyon (French métropole de Lyon), also known as Grand Lyon (i.e. "Greater Lyon"), is a French territorial collectivity located in the east-central region of Auvergne-Rhône-Alpes. Encompassing the city of Lyon and most of its suburbs, it has jurisdiction as both a department and a métropole, taking the territory out of the purview of the department of Rhône.