That's great, Yogi! Boston is a wonderful town to visit and tour. It's rich in history (especially Revolutionary War stuff) but I guess that's all relative to a Brit. While our history goes back 250-300 years that is a drop in the bucket to a European.

Plan on doing a lot of walking.... it's a quaint town with lots of pubs and bars and young people. I know you're interested in American baseball and a trip to Fenway Park (home of the Red Sox) is a true treat.

May is a tricky month in the Boston area - it can be cool or hot but GENERALLY comfortable, especially for walking around. I'm not too familiar with the public transportation up there but if you start out in or near the downtown area you can walk across the river and visit Cambridge, too (the home of Harvard University).

Have a great time!!