Fun stuff to do in Boston?

WOW so much to do and see there.  The liberty trail will take you thru the city and get you to most major historic landmarks esp with limited time.  The shot heard round the world (A brick triangle in the middle of a busy street be careful) Paul reveres house, cemetery where gobs of historical people are buried.  the state house, boston common etc etc.  I highly recommend Harvard yard and the Isabella Gardner museum if you have time.

We recently spent three days in Boston while on vacation.  There is so much to see and do there.

The Freedom Trail which starts at Boston Common is a must.  In addition to the other historical sites mentioned, there is the USS Constitution that you can climb around on and Bunker Hill just north of the naval yard.

The duck boat tours are also a great way to see the city.

In you feel like running, there is a multi use path along the Charles River.  I ran a couple times from the Common, east down Commonwealth, then over to the path via Massachusetts Ave.  Return route was along either Beacon or Marlborough St. which are lined with beautiful brownstone rowhouses.  I thought about returning via Boylston but am saving that for someday finishing the marathon.

If you like Italian food, the north end of town has one of the greatest concentrations of great places anywhere.  Mike's Pastry in that area is also worth a visit.

thanks for all the advice everyone, we just got back last night.  I was watching this thread, but didn't have a chance to respond because we were so busy.

We spent a lot more time at the MIT campus than I was originally expecting so we didn't get to do as much true sight seeing, but still managed to hit a few of the big ones.  We hit Boston Common, but the weather didn't really cooperate with us for a full freedom trail walk.  Not to mention the airline did lose our luggage, so we didn't have our jackets.  lol

I had to go see the USS Constitution because of my Navy background.  Absolutely amazing ship and much bigger than I thought it would be.

We walked around Harvard and it was beautiful, but also a little weird.  Hard to explain, but a couple dudes from Nebraska just didn't seem to fit in at Harvard.  lol

 As for MIT, I couldn't believe how open the campus and community was to visitors.  We pretty much went everywhere and even sat in on some classes.  nerd schwing