'I set off on the most direct route to Paris, in full faith, believing that she would stay alive if I came on foot'In November 1974, when Werner Herzog was told that his mentor Lotte Eisner, the film historian and critic, was dying in Paris, he set off to walk there from Munich, ‘in full faith, believing that she would stay alive if I came on foot’.Along the way he recorded what he saw, how he felt, and what he experienced, from the physical discomfort of the journey to moments of rapture.It is a remarkable narrative – part pilgrimage, part meditation, and a confrontation between a great German Romantic imagination and the contemporary world.