Pope Francis has arrived in Brazil to mark the start of his first international trip as pontiff.
A week long series of events to mark the arrival of the first non-European Pope is expected to attract more than a million young people from around the world.
Brazil correspondent Nick Ravenscroft reports:
Pope Francis drew an estimated three million faithful to Copacabana Beach to give one of the most important speeches of his pontificate.
One of Catholicism's oldest traditions can now be gained through social media including Twitter and Pinterest says a leading Cardinal.