In the southwest corner of Pennsylvania, just about an hour shy of the Ohio state line, sit a couple of National Park System units that might not be on your radar. I wouldn’t call them obscure, but being from the West Coast I had not heard of either until my NPS passport led me there a few months ago. Treasury Secretary Albert Gallatin’s wilderness house at Friendship Hill National Historic Site and Fort Necessity National Battlefield, a small palisade built by then Lt. Colonel George Washington at the very beginning of the French and Indian War, introduced me to history that I was only vaguely familiar with.