Bakery is downstairs from their breakfast & lunch restaurant. Restaurant is only so-so, but the pie is fantastic. We've been making annual pilgrimages from Wolfeboro to take one or two back and freeze for company (a couple of times we even took them back frozen to Washington, DC — yes, they're that good). I recommend calling in advance to ask for UNbaked frozen.
Also, I agree with others recommending Simon Pearce. My son & daughter-iin-law thought their dinner there last summer was excellent...and of course they brought back two frozen apple pies from the Mountain Creamery to NYC. :-)
http://www.mountaincreameryvt.com/apple-pie.html