Pope Francis shows the keys of the city after receiving it from Rio de Janeiro's Mayor Eduardo Paes (L) and as Rio's Governor Sergio Cabral looks on, at the City Palace in Rio de Janeiro where he also blessed the Olympic flags ahead of the Rio 2016 Summer Games, on July 25, 2013. The first Latin American and Jesuit pontiff arrived in Brazil mainly for the huge five-day Catholic gathering World Youth Day. At right, . AFP PHOTO / GABRIEL BOUYS