Pope in Brazil: 'Historic night' on Copacabana Beach
28 July 2013 Last updated at 04:00 BST
Organisers say about two million people have packed Copacabana Beach in Rio de Janeiro for the last evening of World Youth Day with Pope Francis.
The night-long vigil service marks the climax of the five-day festival and culminates in a huge Mass on Sunday.
The Pope called on young people to be the actors of change in society and rebuild the Roman Catholic church.
The BBC's Julia Carneiro, reporting from Rio de Janeiro, said that it was a "historic night".