The Bothnia Railway Museum is one of the largest railway museums in Sweden. It recreates historic railway environments on the very place where once iron ore was smelted in Luleå Järnverk, surrounded by the village of Karlsvik. Ore and other goods were transported on the privately-owned Gammelstad - Karlsvikshyttans Järnväg (GKJ), now with historic trains, from the mainline Malmbanan, a remarkable railway in many aspects.
https://visitlulea.se/en/see-do/destination/norrbottens-jaernvaegsmuseum