I'm going to be in Italy for 3 weeks at the end of September going through to October.
Planning to vist Rome and Florence but I want to also see the Swiss alps (via rail) without going too much into Switzerland. I'm kind of confused with the scenic routes from italy (the centovalli or the bernina express) and what trains to catch at which stations. The websites I've been researching aren't very clear, especially with the different kinds of trains to catch and the type of connections. So basically, I just need to know how to see the swiss alps from Milan (or another train station nearby) in either a day trip or an overnight stay in the alps and coming back to Italy maybe via a different route? Also which trains to catch and whether a eurorail pass would be valid. Also, I'm reading great things about Lake Como. Would it be better to see Lake Como as a separate day trip?