Germany's 'China City': how Duisburg became Xi Jinping's gateway to Europe

For much of the 20th century, the city of Duisburg in Germany’s industrial west was a steel-and-coal town whose chimneys cloaked the skies in smoke. And yet there is something about this soot-stained spot in the Ruhr valley that seems to encourage a particularly clear-sighted view of the rest of the world.

In 1585, it was in Duisburg that Flemish cartographer Gerardus Mercator published a book of maps of European countries – the first ever “atlas” to carry that name. And it was here that Mercator first presented his new world map, the “Mercator projection”, that was so revolutionary for maritime navigators keen to steer merchant vessels across the high seas in the straightest possible line.