With St. Peter’s, St. John Lateran, St. Paul Outside the Walls, it is one of four basilicas in Rome granted special status by the pope. In his will, he wrote that he had visited the Marian basilica at the beginning and the end of every apostolic trip he took during his 12-year papacy.

Tens of thousands of mourners filtered into St. Peter's Basilica in Rome on Wednesday to pay their final respects to Pope Francis.