In recognition of Linz's decades-long role as a center of the Austrian steel industry, the country's largest steel manufacturer, Voestalpine AG, has created a fascinating look at the industry. 

Voestalpine Steel World (Voestalpine Stahlwelt), located in the heart of the country's largest industrial complex, gives visitors a chance to enter a full-size replica of a blast furnace, along with numerous hands-on displays showing the manufacturing process from start to finish. 

Also of interest are the 80 large chrome-plated spheres — some as big as two-and-a-half meters in diameter — illuminated to show the many uses of steel.