Scenic nature winter train or busride from Pittsburgh, PA to ___?

Anyone know a good train or busride route for a few days between Dec 24 and Jan 3rd? Me and my mom want to have a beautiful, scenic trip through the countryside to see all the beautiful rolling hills of pennsyvania (or surrounding states) and the snowy scenery. Any ideas of where to go? Which routes are beautiful to go on? Is amtrak a good way to travel, or bus tour better, and which ones? Or even just a beautiful place to stay for a few days surrounded by peaceful nature? Thanks.