Pope Francis has opened the great Holy Door of St. Peter's Basilica. The ceremony kicks off the 2025 Holy Year. It's a celebration of the Catholic Church that is expected to draw some 32 million pilgrims to Rome. And it will test the pope’s stamina and the ability of the Eternal City to welcome them. This begins the Christmas Eve Mass. The ceremony inaugurates the once-every-25-year tradition of a Jubilee. Francis has dedicated the 2025 Jubilee to the theme of hope.