For burgers, this list is good to start:
http://www.boston.com/ae/restaurants...readerburgers/
Have you ever seen Blue Man Group ? It started in Boston...
Other suggestions:
http://boston.skyzonesports.com/home.aspx - blow of some energy
http://www.waterworksmuseum.org/ - is he into stuff like this ?
http://www.wheelockfamilytheatre.org/ - not sure the april show will be something he wants to see, but an option
Take the Blue Line to Revere and walk along the boardwalk/beach. Go to Kellys for lunch (
http://www.kellysroastbeef.com)
The Hard Rock Boston recently moved to Fanuiel Hall into a new space. Does he like music history ?
I would also recommend this website:
http://www.bostoncentral.com/
Thanks.