Pope Francis celebrates a mass on the centenary of the Virgin Mary apparition at the Shrine of Our Lady of Fatima in Portugal on May 13, 2017. The two young shepherds, Jacinta and Francisco Marto, who had visions of the Virgin Mary 100 years ago in Fatima, a Portuguese site now a global draw for pilgrims, were declared saints today during a mass celebrated by Pope Francis. / AFP PHOTO / TIZIANA FABI