Sooner or later, no matter where you are travelling on Italian railways, you are likely to pass through Bologna Centrale. The city is the main junction between the north and south of the country, close to the route through the mountains. It always has been. The teenage Michelangelo stopped off while journeying between Venice and Florence, and — after a contretemps at the customs office, since Bologna was then a city state — carved some small sculptures for the Basilica of San Domenico.