Back from Boston - The lowlight of my trip was a stroll through Boston Common, interrupted by a half-dozen (obvious) drug addicts, loudly cursing at each other as tourists looked on, mortified. C'mon, kids, let's see those swan boats!
Also, here's something I didn't know: Paul Revere's house, built in 1680, is the last original building in Boston left over from the 17th century. I figured there would be some original buildings from Harvard (est. 1638) but they must have been renovated in the intervening 370 years.