Once home to a thriving village complete with a school, town common, a hotel, and stock barns; the 55-foot tall blast furnace of Katahdin Iron Works and a single nearby charcoal kiln (once among sixteen) are the only remnants of the industrial community that forged pig iron sent to market for the creation of metal tools, machinery, and railroads. Located on a dirt road off Rt 11 between Brownville and Millinocket, the State Historic Site is surrounded by hiking, OHV trails, and camping.

Check in at KI Checkpoint Station is required, even if you're only visiting the state historical site.