We took a Boston By Foot tour of Beacon Hill.  It was VERY informative and interesting.  It was a walking tour that took about 90 minutes.  Our group was small, just our family of 4 and another family.  The tour focused on the architecture and some of the people who lived on Beacon Hill

For more information on the tour try this: http://www.bostonbyfoot.org/tours/Beacon_Hill

Above are some of the pics.