Pheasant Island, located between France and Spain, bizarrely changes countries twice a year. But why?

From the sublime viewpoints above San Sebastian in the Basque Country, a hiker can see one of the world’s oldest, most romantic, most biblical of paths. The Camino de Santiago pilgrimage passes this way, and the Homerian traverse to Saint James’ tomb in the far western corner of northern Spain is well-trodden, proselytising many and capturing minds for centuries…