From the Wikipedia page 
The Metropolitan City of Bologna (Italian: Città Metropolitana di Bologna) is a metropolitan city in theEmilia-Romagna region, Italy. Its capital is the city of Bologna. Replacing the Province of Bologna, it was first created by the reform of local authorities (Law 142/1990) and then established by the Law 56/2014. It has been operative since January 1, 2015.
The Metropolitan City is headed by the Metropolitan Mayor (Sindaco metropolitano) and by the Metropolitan Council (Consiglio metropolitano).
The Metropolitan City of Bologna is part of the region of Emilia-Romagna in northwestern Italy. It is in the centre of the region and is bounded on the east by the Province of Ravenna, while the Province of Ferrara lies to the north and the Province of Modena lies to the west. To the south are the Metropolitan City of Florence, the Province of Prato and the Province of Pistoia, all in the region of Tuscany.