Is there a pretty/interesting New England town just a few hours train ride from Manhattan that would be a good contrast to the challenges of NYC in August? I'm trying to plan a trip with my two teenagers in 2012. We've never been to the States before and sadly only have limited time and money to spare (10 days and £3000 max including flights). We want to see all the sights of manhattan first, staying in an a central hotel/apartment (any suggestions?), but we'd also like to sample a different environment and pace of life out of town for 2-3 days. Is there anywhere worth visiting that has rail good connections to NYC and JFK, and is easy to navigate without a car?