Pope Francis celebrated a final Mass on Sunday before an estimated 700,000 people and presidents from across Central America as he brought World Youth Day to a close on a Panama City field splashed with flags from across the Americas, AP reports.

The Vatican said the presidents of Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Panama and Portugal were on hand for the Mass, as well as hundreds of thousands of pilgrims who camped out on a field following a vigil service Saturday night.

“Our trip was very long but it was worth it because we came here to Panama City because of our faith, our Christian faith,” said pilgrim Sawadogo Kiswensidad, who travelled from Burkina Faso.

After Mass, Francis was heading to a church-run home for people infected with HIV, a visit that is likely to send a strong message in Panama, where AIDS carries a stigma.

“Many of the people we help here have been rejected by their families, by people in the street,” said the Rev. Domingo Escobar, director of the Casa Hogar El Buen Samaritano . “But here they receive Christian help, as the church wants.”

Francis then meets with Youth Day volunteers before heading back to Rome.

On Saturday, Francis lunched with some of the pilgrims in an encounter the Vatican described as familiar and festive. The young people said they were surprised at Francis’ informality and interest in their questions.