Bean Town. Paul Revere's midnight ride. Sam Adams beer. Lots and lots of American history in one city. A must see.
Nav:
City Walk: If you don't join a tour or have an audio tour, try a self guided tour on the Freedom Trail. It's a red line on the sidewalk that takes you by several historic sites. It's basically a historical city walk.
Nosh:
Union Oyster House: The oldest restaurant in the country, since 1826.
Nip:
Bell In Hand Tavern: America's oldest tavern, founded in 1795. Didn't get a photo of the beer...doesn't matter...go anyway.