In the brief window of the interwar period, Art Deco transformed every city with an abundance of concrete, glass and ...

Instead of a team of lighthouse keepers keeping the lights on in remote coastal locations, the automation meant the beams were instead controlled from a nerve centre in Edinburgh.

On closer inspection I saw that it was a moveable wall, not a piece of art. Why could one piece of work be considered ‘art’ and the other not? The answer to the question could, perhaps, be found in ...