If you know any hidden gems or special places off the beaten path post them up here! Whether it's something like restaurants or outdoor activities (the latter appealing more to me!) I think it would be nice to know of. I drive an hour + in any direction every weekend to get out of the city and do something outdoors. I know of a few places to go nearby, but could always use more. One of my favorite 'local' places to go is the middlesex fells. I can take my dog or my mountain bike...but no dirtbikes or 4x4's of course!
The Arnold Arboretum is really nice to walk around. They have guided tours in the warm months as well. And those of us visiting cityprofile.com from homebrewtalk.com, they have HOPS! But they don't let you take any - it's sort of a living museum of flora.
Probably nicer in summer/spring, but I love the urban hike from the Back Bay Fens (off of Boylston St. 2 blocks from Mass Ave eastward (Boylston, Fenway, Charlesgate intersection) all the way through Jamaica Pond, even to the Arboretum.
And Comm ave from Mass Ave to the Public garden is a lovely stroll.
Last time I was in Boston I went to the Hen House where they serve chicken and waffles! This is the only restaurant I know of that has this meal combination. It sounds kind of weird at first, but it was surprisingly good. You can choose the type of waffle, butter, and chicken and you will not be disappointed. Prices are decent too.