In brief
The wooden town is associated with a long development of copper mining.
Useful to know
Røros arose around copper mines in the 17th century and was rebuilt after the destruction of 1679. UNESCO notes that the darkened wooden facades give a medieval impression, despite the later history. [1]
This is a good example of why appearance is not sufficient for dating. In a map include industrial and rural territories and transport routes, not just residential streets. The mining town works through the connections to the surrounding area. The visual unity of the wooden structures is part of the story, but does not replace the production history.
Sources
For further detail and to check the information: