Pope Francis draws 3 million in Rio de Janeiro One of the largest papal Masses in history ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page STEFANO RELLANDINI/reuters Pope Francis celebrated Mass at Copacabana beach in Rio de Janeiro, Brazil. luca zennaro/epa The pope’s visit to Brazil is his first overseas trip of his papacy. ANTONIO LACERDA/epa Worshippers prayed during the event, which was the closing of the 28th World Youth Day. christophe simon/afp/getty images As many as three million people attended the Mass. tasso marcelo/afp/getty images Attendees rested on the seafront after the Mass.