
Blaafarveverket, Modum
A former cobalt-blue pigment works founded in 1776, which in the 19th century was one of the country's largest industrial enterprises. Art exhibitions in summer and old mines to visit.
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From the Drammenselva valley to the mountains of Hallingdal and Numedal.
Information checked on 10 October 2026.

A former cobalt-blue pigment works founded in 1776, which in the 19th century was one of the country's largest industrial enterprises. Art exhibitions in summer and old mines to visit.

Discovered in 1623 by two young shepherds, the deposit gave rise to the town of Kongsberg the following year and was mined until 1958: about 1,350 tonnes of silver. The Norwegian Mining Museum runs tours of the King's Mine by underground train.

In the Numedal valley, 7 km west of Rødberg, one of the country's oldest stave churches: its timber was felled in the winter of 1167–1168. Owned by Fortidsminneforeningen since 1898, it escaped the major restorations.

A 1.65 km road tunnel bored as a helix into the mountain above Drammen, opened in 1961: it winds six and a half times before emerging on the Skansen ridge, with parking, a café and views over the town and fjord.