After seeing this on the iPhone App, I visited the Volklingen Ironworks today. Signs are in German, French, and English. Not only are the views and history incredible, but the staff and additional accommodations are unbelievable: art studio, childrens museum, 50m viewing stand (you must wear provided hard hats). If you find yourself near Saarbrucken and have a few hours, it's easily worth the 10 Euro entrance fee. I'm going back soon--don't forget a camera!