Antietam FurnaceVisit WebsiteGet Directions Details Details Built in 1768, the furnace produced goods for the Revolutionary War, relying on the labor of both enslaved and free blacks. National Register of Historic Places. Hours See website for hours. Location3912 Harper's Ferry RdSharpsburg, MD21782Get DirectionsContactMapWestern MarylandPlaces NearbyAttractions, Accommodations, & DiningAntietam Guest HouseLearn MoreAttractions, Accommodations, & DiningThe Inn at AntietamLearn MoreAttractions, Accommodations, & DiningAntietam Overlook Farm Bed & BreakfastLearn MoreAttractions, Accommodations, & DiningAntietam's Jacob Rohrbach Inn B&BLearn MoreAttractions, Accommodations, & DiningClipp's Mill and Log CabinLearn MoreSee More For Western Maryland