VATICAN CITY — Pope Francis kicked off the 2025 Holy Year on Tuesday , inaugurating a celebration of the Catholic Church that is expected to draw some 32 million pilgrims to Rome in a test of the pope’s stamina and the ability of the Eternal City to welcome them.

On his wheelchair, Pope Francis began the celebration of Christmas by opening the Holy Door at St. Peter’s Basilica at the Vatican, kicking off the 2025 Holy Year. “The steps we now take are the steps of the whole church,” the pope said.

Pope Francis made a visit on Thursday to one of the largest prison complexes in Italy, opening a special "Holy Door" for the 2025 Catholic Holy Year, in what the Vatican said was the first such action by a Catholic pontiff.

Amid security worries, millions of pilgrims are expected to descend on Rome for a Jubilee Year of major Catholic celebrations throughout 2025. Here are the highlights.

Pope Francis inaugurated his Holy Year at Rome’s main prison on Thursday, bringing a message of hope to inmates and involving them in the Catholic Church’s once every quarter-century celebration that is expected to bring about 32 million pilgrims to Rome.

The pope encouraged inmates to participate in the church's celebration that happens every 25 years, where people travel to Rome on a pilgrimage.