A dove rests on the staff of a pilgrim during the celebration of a centenary mass by Pope Francis, to mark the apparition of the Virgin Mary at Fatima's Sanctuary, central Portugal, on May 13, 2017. Two of the three child shepherds who reported apparitions of the Virgin Mary in Fatima, Portugal, one century ago, will be declared saints today by Pope Francis. The canonisation of Jacinta and Francisco Marto will take place during the Argentinian pontiff's visit to a Catholic shrine visited by millions of pilgrims every year. / AFP PHOTO / Tiziana FABI