The crew filmed in the same San Pablo Leper Colony that Guevara himself had visited. According to Bernal, 85% of the people suffering leprosy in the film were actual lepers, with some of them having lived there when Che and Granado worked at the colony. In fact, when Granado returned with the film crew to the leprosarium of San Pablo, he found some of the people he had treated half a century earlier, remarking that "It was wonderful and amazing that they could still remember me." Granado was also pleased that buildings constructed for the scenes shot at the leprosarium were afterwards used by the patients themselves.