Hundreds of thousands of people gathered in Saint Peter's Square for a historic day of four popes with Francis and Benedict XVI honouring their predecessors John XXIII and John Paul II and declaring them saints in the first ever canonisation of two pontiffs.
Polish pilgrims carrying the red and white flags of John Paul's homeland were among the first to press into the square well before sunrise, held back by human chains of neon-vested civil protection workers trying to maintain order.
Pope Francis has declared John XXIII and John Paul II saints in a ceremony made more historic by the presence of retired Pope Benedict XVI.
The men being made saints today left their mark on the Catholic Church in different ways. Here's all you need to know about the pontiffs.