Building used by the black smith at Hopewell Furnace National Historic Site. One of the National Park Service's sites in Eastern Pennsylvania that is tripod friendly, well worth a day's visit if you are in the area.
Nice picture and you could use this as a teaching example for the zone system. Every zone is here and all correct as well, producing a technically great neg as well as a pleasing one. I have seen much poorer pics used in instruction books than this one.