(FILES) This file photo taken on May 13, 2015 shows Pope Francis touching a statue of Our Lady of Fatima as he arrives for his general audience at St Peter's square on May 13, 2015 at the Vatican. Pope Francis is heading to Fatima on May 12, 2017 on a pilgrimage that will attract up to a million faithful and see the pontiff canonise two child shepherds who reported apparitions of the Virgin Mary 100 years ago. / AFP PHOTO / Vincenzo PINTO