Before climbing the blast furnace, step through the building that explains where you are. The Halle des poches à fonte once belonged to the working steel plant, handling the great ladles used around molten iron.
Today it is the Fonds Belval visitor point. The change of purpose is pure Belval: old ironwork remains visible, while glass and a public welcome have replaced the heat and noise of production. It is a useful first stop for maps, practical guidance and the story behind the Cité des Sciences. Arriving without a plan is no problem. Start here, ask a question, then let the site unfold on foot.
It opens 10:00 to 19:00 from 1 April to 31 October, then 10:00 to 16:00 from 1 November to 31 March. Closed on Tuesdays, open on public holidays.



