I managed to visit Boston city twice. I saw many things. A saw the place where the American Revolution started and they revolted against the English. I also saw Atlantic avenue and their own big park and the costal areas.
I went on their metro rail. They have three tracks. Not sure how they work though. I remember the lines are named after colours. They have the red line and the orange line and green line. I remember the green line was like a tram that goes below ground. It runs on the road then it doubles as a metro rail train and stops at Subway stations. I used the commuter train to get from Westborough to Boston, the train has two floors and it was diesel powered, it was a huge monster of a train and the platforms are much lower than the platforms in the uk and people would just walk across the tracks to get to the other platform. I remember that commuter rail in the state of Massachusetts is coloured purple on the maps, not sure if it is the same in other American states.