Even people who DO drive should avoid driving in Boston whenever possible. It's a double-edged sword, with TERRIBLE infrastructure combined with a population that considers a red light only a suggestion.
I'm a BIG fan of the Freedom Trail, but I also really like history. Not everyone's cup of tea.
The North End is always good for a good italian meal.
Faneuil Hall is always a fun place for eating. Lots of different types of food.
Boston Common is also nice, although it can get pretty cold with the wind whipping through there during November.
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"I will not be pushed, filed, stamped, indexed, briefed, debriefed or numbered. My life is my own."