Stjärnsund Ironworks, which is also called " the white ironworks", is perhaps the best-preserved eighteenth-century ironworks in Dalarna. It was founded by " the father of Swedish engineering", Christopher Polhem, and his companion Gabriel Stjerncrona, and this was once on the site of their factory for "object of general utility", one of Swedens first factories. Here they also manufactured the Polhem locks and Stiernsund clocks. Much of the works was destroyed by fire i 1737 but it was rebuilt. Stjärnsund mansion and several of the wings were built at the end of the 1770s.
”I Stierncrona with capital and I Polhammar with genius and sens have decided to found a manufactuering works... so beginns the story of the ironworks i Stjärnsund.