General view of the construction site of a major underground hub in central Piazza Venezia in Rome, Thursday, May 9, 2024. The Vatican crosses a key milestone Thursday in the runup to its 2025 Jubilee with the promulgation of the official decree establishing the Holy Year. For the next four years at least, central Piazza Venezia and its Imperial Forum-flanked boulevard to the Colosseum are scheduled to be congested and blighted by giant, 14-meter (yard) high green silos that are needed for the subway drilling operation under way. (AP Photo/Alessandra Tarantino)
Pope Francis presides over the second vespers in St. Peter's Basilica on Ascension Day, Thursday, May 9, 2024, after reading the papal bull 'Spes non confundit' (Latin for, hope does not disappoint), the official decree establishing the Catholic Holy Year: a once-every-quarter-century event that is expected to bring some 32 million pilgrims to Rome (AP Photo/Gregorio Borgia)
Pilgrims crowd St. Peter's Square at the Vatican, Saturday, May 30, 1998, on Pentecost Day. The Vatican crosses a key milestone Thursday, May 9, 2024, in the run-up to its 2025 Jubilee with the promulgation of the official decree establishing the Holy Year: a once-every-quarter-century event that is expected to bring some 32 million pilgrims to Rome and has already brought months of headaches to Romans. (AP Photo/Andrew Medichini)
Pope Francis arrives to preside over the second vespers in St. Peter's Basilica on Ascension Day, Thursday, May 9, 2024, after reading the papal bull 'Spes non confundit' (Latin for, hope does not disappoint), the official decree establishing the Catholic Holy Year: a once-every-quarter-century event that is expected to bring some 32 million pilgrims to Rome (AP Photo/Gregorio Borgia)
Live signals from the Vatican, St. Peter's Basilica, and the surrounding streets are seen in the control room at the municipal police headquarters in Rome, Wednesday, April 6, 2005. The Vatican crosses a key milestone Thursday, May 9, 2024, in the run-up to its 2025 Jubilee with the promulgation of the official decree establishing the Holy Year: a once-every-quarter-century event that is expected to bring some 32 million pilgrims to Rome and has already brought months of headaches to Romans. (AP Photo/Corrado Giambalvo)
Pope Francis presides over the second vespers in St. Peter's Basilica on Ascension Day, Thursday, May 9, 2024, after reading the papal bull 'Spes non confundit' (Latin for, hope does not disappoint), the official decree establishing the Catholic Holy Year: a once-every-quarter-century event that is expected to bring some 32 million pilgrims to Rome (AP Photo/Gregorio Borgia)
General view of the construction site of a major underground hub in central Piazza Venezia in Rome, Thursday, May 9, 2024. The Vatican crosses a key milestone Thursday in the runup to its 2025 Jubilee with the promulgation of the official decree establishing the Holy Year. For the next four years at least, central Piazza Venezia and its Imperial Forum-flanked boulevard to the Colosseum are scheduled to be congested and blighted by giant, 14-meter (yard) high green silos that are needed for the subway drilling operation under way. (AP Photo/Alessandra Tarantino)
A deacon brings the papal robe for Pope Francis who will preside over the second vespers in St. Peter's Basilica on Ascension Day, Thursday, May 9, 2024, after reading the papal bull 'Spes non confundit' (Latin for, hope does not disappoint), the official decree establishing the Catholic Holy Year: a once-every-quarter-century event that is expected to bring some 32 million pilgrims to Rome (AP Photo/Gregorio Borgia)
Tourists approaching the Vatican's St. Peter's Basilica Saturday, July 11, 1998, walk through street works. The Vatican crosses a key milestone Thursday, May 9, 2024, in the run-up to its 2025 Jubilee with the promulgation of the official decree establishing the Holy Year: a once-every-quarter-century event that is expected to bring some 32 million pilgrims to Rome and has already brought months of headaches to Romans. (AP Photo/Massimo Sambucetti)
People gather at the Fori Imperiali avenue, with the Colosseum in the background, during an event celebrating the ban on private vehicles, in Rome, Saturday, Aug. 3, 2013. The Vatican crosses a key milestone Thursday, May 9, 2024, in the run-up to its 2025 Jubilee with the promulgation of the official decree establishing the Holy Year: a once-every-quarter-century event that is expected to bring some 32 million pilgrims to Rome and has already brought months of headaches to Romans. (AP Photo/Riccardo De Luca)