industrial facilities of the world heritage site of the former ironworks for pig iron production voelklingen ironworks

architecture attraction blast brick building cast chimney construction cultural culture destination dusk europa facilities factory famous former furnace german gigantic heavy heritage historic historical history holiday industrial industry iron ironwork ironworks landmark landscape maker metal pig production rust rusteaten saar saarland scenery scenic shivering sightseeing site steel sunset tour tourism travel trip unesco voelklingen work world