Milan - or Milano, in Italian - is a relatively small town, with Piazza Duomo
(or the Cathedral Square) as its historical and geographical umbilicus.
The city center
is enclosed by the inner ring, corresponding to the walls which protected Milan during the Middle Ages. (Those walls, by the way, are no longer there).
A wider area is enclosed by the ’Viali’ or ‘Bastioni
’, the ring of the 16th-century Spanish Walls (almost completely gone, too). Today, driving in this area involves a congestion charge
The area outside the Bastioni is more recent. Its outer boundary is called the 'Circonvallazione Esterna', a ring made up of the connecting road on the near outskirts of town.
Then there are the real outskirts...