Pope Francis (C) is welcomed by Polish President Andrzej Duda (R) and his wife Agata Kornhauser-Duda (L) in Krakow's Wawel Castle in Krakow, on July 27, 2016. Pope Francis heads to Poland for an international Catholic youth festival with a mission to encourage openness to migrants. / AFP PHOTO / POOL / Filippo MONTEFORTE