I'm from a Boston-area university, and I am helping organize a trip for nine Israeli students visiting the Boston area. We hoped to take them on a day trip (preferably by commuter rail, but by car might be an option) to somewhere in the Boston area. We were considering Concord or Salem, but I have personally never been to either. Might any you have any suggestions for which one to go to, or better places in mind? Thanks in advance.