During our two October trips in 2012 and 2013, we saw gorgeous foliage both in Boston and outside of Boston, altho the best was outside. The first trip we visited Lexington and Concord (thank you SO MUCH for that Beaglemom, you're the greatest). The color was amazing in both of those beautiful historic towns, and equally breathtaking along the countryside as we drove.
And thanks to another (former) Tugger, good friend, and Boston native Gloria Foley (active 1998-2005) we drove up the coast to Ogunquit, Maine---a small fishing village which is very popular with tourists---great shops and restaurants, plus the walking paths called Marginal Way, which winds around the coast offering spectacular vistas from high above the rocks, upon which the waves continually crash.
New England in the Fall? Wow, doesn't get any better than that.
(Probably because we didn't see any snow, right Susan?)