Canonization of Pope John XXIII and Pope John Paul II

April 27, 2014: Pilgrims sleep on the ground near St. Peter's Square waiting to attend the ceremony for the canonization of Pope John XXIII and Pope John Paul II. (AP)

April 27, 2014: A group of Polish nuns wait to reach St. Peter's Square hours before the ceremony. (AP)

April 27, 2014: Pilgrims sit and pray inside a church near St. Peter's Square while waiting to attend the ceremony. (AP)

April 27, 2014: People gather in St. Peter's Square at the Vatican (AP)

April 27, 2014: Priests hold pictures of Pope John XXIII, left, and Pope John Paul II, in St. Peter's Square at the Vatican. (AP)

April 27, 2014: A prelate takes pictures in St. Peter's Square. (AP)

April 27, 2014: Emeritus Pope Benedict XVI, center, arrives for the service in St. Peter's Square (AP)

April 27, 2014: Pope Francis arrives to lead the solemn celebration. (AP)

April 27, 2014: Pope Francis kisses the relic of Pope John Paul II. (AP)

April 27, 2014: A wide view of the ceremony. (AP)

April 27, 2014: Prelates gather in St. Peter's Square at the Vatican (AP)

April 27, 2014: A view of St. Peter's Square. Italian officials estimated that approximately 1 million people would watch the ceremony in the square or on giant screens set up in the surrounding streets and piazzas.  (AP)