Pope Francis waves from the popemobile as he leaves the nunciature for the CATAM military airport on his way to Cartagena, on September 10, 2017, in Bogota on his last day in the country. Nearly 1.3 million worshippers flocked to a mass by Pope Francis on Saturday in the Colombian city known as the stronghold of the late drug lord Pablo Escobar. / AFP PHOTO / John Vizcaino