Starting in Charlestown, The bunker hill monument - http://www.nps.gov/archive/bost/Bunker_Hill.htm
 

USS Constitution - http://www.ussconstitution.navy.mil/ (yes, it is still commissioned and sailors fight for the posting)

Paul Revere house (with all other freedom trail sites in the sidebar - like old north and old south churches, Faneul hall, etc.) http://www.nps.gov/archive/bost/Paul_Revere_House.htm

The 1775 stuff starts in Charlestown, but it moves through Somerville, Medford, Arlington and then into Lexington, Lincoln, and Concord.  The reenactment schedule is here - http://www.battleroad.org/events.html
The main page (www.battleroad.org) has a sidebar with additional information.)

The Lexington event, which is very powerful and moving and certainly does not glamorize war, takes place at dawn. They make a big effort to get the kids down to the front.   
 

One page that I have found fun is a Blog set up to chronicle the events of colonial times - it may be more for the grownups though. http://boston1775.blogspot.com/

The black heritage trail is a recent and welcome addition to the Boston walkabout landscape.  It starts at the African American history museum and details important contributions made by a nearly invisible people http://www.afroammuseum.org/trail.htm

I think that is plenty enough in that to fill up a whole April vacation.  For next year, when renovations are complete, The Boston Tea Party Ship and Museum will reopen http://www.bostonteapartyship.com/

another site with a simple chronology (that incidentally explains "powderhouse square") http://bobhartwell.com/AmericanRevolution.htm
 

 

My thanks to Kate Adams, for researching and providing this information for us.