The oldest working camera obscura in the world is located on the grounds of the Dumfries Museum, a local history museum, in Dumfries, Scotland. The main part of the museum has large and varied collections relating to local history from the pre-historic era to recent times but the camera obscura is the star of the show. This device has been in continuous operation since 1836. Both the camera obscura and the museum at Dumfries are part of a closely linked story. Their origins lie in the rescue of an 18th-century windmill…
