Special issues of the Osservatore Romano newspaper are posed on chairs before the canonisation mass of Popes John XXIII and John Paul II at St Peter's square on April 27, 2014 at the Vatican. Catholics from around the world gathered in Rome on Sunday for a mass presided by Pope Francis to confer sainthood on John Paul II and John XXIII -- two influential popes who helped shape 20th century history. AFP PHOTO / FILIPPO MONTEFORTE