Pope Leo celebrated the largest event yet of his nearly three-month tenure on Sunday, encouraging a crowd of more than a million Catholic young people gathered in a field on the outskirts of Rome to spread their faith.

ROME -- Hundreds of thousands of young Catholics poured into a vast field on Rome’s outskirts Saturday for the weekend highlight of the Vatican’s 2025 Holy Year: an evening vigil, outdoor slumber party and morning Mass celebrated by Pope Leo XIV that marks his first big encounter with the next generation of Catholics.