Blaafarveværket

Scandinavia's first chemical enterprise from 1773 — former cobalt-blue works in Modum, now an open-air museum and art gallery.

Blaafarveværket (the Cobalt Works at Modum) was founded in 1773 in Modum, Buskerud province, as a royal manufactory and was Scandinavia's first large-scale chemical enterprise. The works produced cobalt blue — a sought-after pigment used across Europe for porcelain, glass, and paintings — and supplied buyers as far away as China. At the height of production it was one of the largest operations of its kind in the world. As demand for cobalt pigments collapsed in the late nineteenth century, the site was gradually repurposed, eventually becoming a protected cultural monument, open-air museum, and art gallery. Today Blaafarveværket is considered one of Norway's most important cultural heritage sites and welcomes thousands of visitors each year with changing exhibitions and guided historical tours.