voestalpine Stahlwelt is a polished industrial visitor centre attached to one of Linz's defining companies. It explains steelmaking, materials technology, and the role heavy industry has played in the city's modern identity.
This is a good stop precisely because Linz is not only old churches and Danube views. Travellers interested in industry, design, engineering, or Austria's postwar economy will find it more revealing than another generic city museum.