North Conway, New Hampshire. Drive up the auto road of Mt. Washington, and there are awesome restaurants in that area (Tuckermans Tavern is my favorite restaurant ever). Some unbelievable hiking in the White Mountains too..both long and short hikes. Also really nice golf courses if you are into that
Will second this - one area of NE I truly miss being in Pgh. While it's not foliage season, drives on the Kancamagus and Bear Notch Rd are still beautiful in summer. A couple of good (relatively) short hikes are Mt. Chocura and Mt. Cannon, both have sweet lookouts, neither is more than 4 hours in and out. Sabbady Falls is another short but pretty hike. I've only golfed the Mt. Washington (Bretton Woods) course, but have seen the Waterville Valley layout enough times during hikes to want to play there.
It's been awhile since I've been up there, so can't do restaurant recos as most all my old stomping grounds are long gone, but down around Lincoln where the Kancamagus meets Rte 3, there were always some great breakfast spots (e.g. Flapjacks), and there are a bunch of new burger/brewpub places, so don't just stick to N. Conway. It's also a fairly short drive (90 mins) over to Sebago Lake if you wanted to check that out and Portland isn't much farther if you wanted to check that out (or LL Bean a bit up the road). Always fun to watch seaplanes taking off and landing there. I don't recall a ton to do beyond scenery, but I guess it's built up more now.