Parmigiano-Reggiano is produced in a restricted area around Parma. Genuine Grana Padano, a granular cheese from the plain of the River Po, and Grana Trentino, are what cheeses of this type produced in other regions of Italy are called. The name Parmesan is used to refer to all cheeses of this type produced outside Italy. Today, Parmesan-type cheeses are manufactured around the world.