Not to be confused with the former Prussian city of Königsberg.Kongsberg (About this sound listen ) is a town and municipality in Buskerud county, Norway.The town was founded in 1624 under the name Konings Bierg by Danish-Norwegian king Christian IV as a mining community. It was granted its royal charter of trade—amounting to official township—in 1802. The municipality of Kongsberg was established on 1 January 1838 (see formannskapsdistrikt).