If you go North, I got three words for you: Baxter.State.Park.
But it's far North, so it's probably too much for this visit. But it's worthwhile to keep in mind for a later date:
Top of Mt. Katahdin, highest mountain in Maine and the Northern terminus of the Appalachian Trail:
Katahdin as seen from Chimney Pond (a lot of folks use this as a base camp):
Try not to hit any of these:
Try to make a dinner of one of these:
This is actually a birding map, but it's pretty good:
I used to go to summer camp in Bingham, which is South of Baxter State Park and North of Bangor. Never saw a clearer sky. Bring binoculars and hope for a clear night. At least in Bingham, you could see the Milky Way and a boatload of stars.