(A 500-year-old map used by Columbus reveals its secrets.) Putsch’s original map, a somewhat crude woodcut, became known by a variety of titles, including “Europa regina” (“Queen Europe”).

But to really put in perspective just how massive Europe’s heatwave is, you simply have to look at any interactive weather map. We’ve rounded up a few here: Subscribe to the Daily newsletter.

An old map believed to mark the spot where German soldiers hid treasure worth millions of euros during World War Two sparked the imagination of amateur treasure hunters in the Netherlands this week.