Pope Francis has left Rome for Brazil for his first foreign trip, which will be taking place amid high security.
The pontiff will be greeted by some two million young people from all over the world at the Roman Catholic World Youth Day festival in Rio de Janeiro, reports BBC.
The first Latin American Pope will also celebrate Mass on the famous Copacabana beach and visit shanty towns.
Some 22,000 security staff will be on duty during the visit of the Pope, who is not using his armoured Popemobile.
Ahead of his week-long trip, the 76-year-old Pope from Argentina called on his followers to join him spiritually on his journey through prayer.
The pontiff is due to arrive in Brazil – the world’s most populous Catholic country – later on Monday, and huge crowds are expected to greet him at Rio airport.
The Vatican says it has full confidence in the ability of Brazilian security forces to protect the pontiff during his visit.