To see Pope Francis in the flesh - so famous, so familiar - his pewter cross hanging starkly against his white robes was extraordinary.
Pope Francis has exclusively spoken to ITV News about human trafficking and had a message for those responsible for the crime.
Top police officers, religious leaders and politicians from around the world have gathered in the Vatican to eradicate people trafficking.
Pope Francis has posed for 'selfies' with young people from Rio de Janeiro in St Peter's Square after delivering a homily during a two-and-a-half hour ceremony to mark Palm Sunday.
Pope Francis has asked for forgiveness for priests who molested children in some of his strongest words ever on the Roman Catholic Church's sexual abuse crisis.
"I feel compelled to personally take on all the evil which some priests [...] to personally ask for forgiveness for the damage they have done for having sexually abused children," he told members of a children's' rights group, according to Vatican Radio.
Instrumental in organising the human trafficking and slavery conference was Cardinal Vincent Nichols, the head of the Roman Catholic Church in England and Wales.
Like Pope Francis he wants the voices of victims to be heard more clearly.
When the conference was over, ITV News' Julie Etchingham asked the Cardinal to assess the impact of the Pope's message that trafficking was a crime against humanity:
Human trafficking is a booming business in Britain, with 47 people prosecuted for the offence last year alone.
ITV News Correspondent Juliet Bremner speaks to a female victim who was forced to have sex with men by her captors, and the detective who arrested the couple she managed to flee from.
The Queen exchanged gifts with Pope Francis at the Vatican today, with the head of the Catholic Church giving Her Majesty an ornamental orb for her great-grandson, Prince George.
"He will be thrilled with that - when he is a little older!", the Queen joked.
Pope Francis also gave the Duke of Edinburgh a set of papal medals, prompting the Duke to joke that it was "the only gold medal I have ever won".
The Queen gave the pontiff a selection of British produce from the royal estates, including a bottle of whiskey from Balmoral and honey from Buckingham Palace.
The Queen and the Duke of Edinburgh have been meeting Pope Francis at the Vatican this afternoon, following a lunch with Italian President Giorgio Napolitano.
She told the head of the Catholic Church: "I hope we haven't kept you waiting, we were having lunch with the president."