Pope Francis waves as he arrives for the 37th World Youth Day flock to the Parque Tejo in Lisbon, Saturday, Aug. 5, 2023. On Sunday morning, the last day of his five-day trip to Portugal, Francis is to preside over a final, outdoor Mass on World Youth Day – when temperatures in Lisbon are expected to top 40 degrees C (104F) – before returning to the Vatican. (AP Photo/Armando Franca)
