We will be spending 2-3 days in Boston in August. Any suggestions on what to see or where to eat?

Some of my favorites:

Freedom Trail; Museum of Fine Arts; strolling along Newberry Avenue; Filene's Bargain Basement; Minuteman Nat Historic Park; Copley Square; Christian Science Mother Church, including the Mapparium; Computer Museum; museums at Harvard University

Baylie,

For a very casual seafood dining experience, try the No Name Restaurant on Fisherman's Pier. It's good food and a lot of fun.

Paul had many of the best sights listed. Let me add the Isabella Stewart Gardner museum if you like art. If you are travelling with kids (or even if not) you might like the Science Museum, or the New England Aquarium.

We're also spending a few days in Boston in August & my research has turned up a disappointing bit of info, i.e. that the Computer Museum, which my kids would have loved to visit, is closed until the fall while it merges with the Museum of Science. Just our luck! See http://www.tcm.org/

Take a walk down Boylston or Newbury Streets to the Public Gardens and the Boston Commons. Kids really enjoy the Public Gardens. I would also head to Fanueil Hall where there are lots of stores for adults and kids and a large open air food market place. Across from Fanueil Hall is the Harbor where there is also a playground. If it is very hot, take a cruise around the harbor or rent canoes in Newton (near Boston) and row down the Charles River for a great view of the city.

Visit the U.S.S. Constitution (Old Ironsides) - it's really fascinating, and they also have a great museum there. You can also tour a WWII Destroyer. They have free parking for visitors at the Charlestown Navy Yard, or you can take a water taxi from one of the wharves downtown.

First let me say Boston is a terrific city with lots to see and do for all ages. You did not mention if you will have children with you. However, the Swan Boats and Boston Common are a must even for those of us who live in Boston.
High Tea at the Ritz overlooking Boston Common is a real treat without the expense of dining at the Ritz (which is a real (expensive) treat). The North End of Boston an absolute must.
Feasts every weekend in the summer and truly some really fine Italian restaurants delighting everyone. Filene's Basement is the best for bargain shopping. Can't be beat. There are all kinds of cruises out of Boston Harbor if time permits. Legal Seafood offers some of the freshest and finest seafood in all the world, I think! A fun thing to do is Boston Duck Tours. There are wonderful walking tours that include some of Boston's great history as well. Harvard Square is a neat place to see. Harvard square also offers some wonderful restaurants. (Henrietta's Table at the Charles Hotel-excellent food/moderately priced. There are tons of places). Of course walking through Harvard Yard is kind of neat. Newbury Street makes me feel like I am on vacation. Quincy Market/Fanueil Hall can be nicely combined with the North End. For a real treat go to Mike's Pastry Shop on Hanover St. in the
North End and have yourself a lobster tail. Oh it's the best desert you will ever have....!

There really is so much more to Boston than anyone can tell you. I do encourage you to buy a good guide book and incorporate that with all the responses you get. Best wishes for a wonderful trip.

Let's not forget Fenway Park-one of the last great baseball stadiums. -Jack