Pope Benedict XVI arrives in his papamobile at the end of his last weekly audience on February 27, 2013 at St Peter's square at the Vatican. Pope Benedict XVI will hold the last audience of his pontificate in St Peter's Square on Wednesday on the eve of his historic resignation as leader of the world's 1.2 billion Catholics.      AFP PHOTO / GABRIEL BOUYS Photo: AFP, AFP/Getty Images / 2013 AFP