There is a ton of everything Boston, really up to what you like to do. There is history tours, sports, or a lot of outdoor shopping / tourist areas.
I know in Brookline I used to eat at a place called Fugakyu, its really good Japanese food. If you're into food you might want to check out Yelp or maybe someone from BTown here can recommend some places to eat. Boston as much as I dont like the city is one of the best food cities I visit.