Even those with no interest in bike racing might try watching the Tour de France, the Giro d’Italia, and the Vuelta a España, which starts on August 19, on television: they are the best possible travelogues, with aerial shots of three countries ravishingly beautiful in different ways, landscape of mountains and valleys, meadows and vineyards, castles, cathedrals and churches, great cities and pretty little towns. It might make even the most zealous Brexiter or American Firster warm a little to the glories of Europe.