The need to go on pilgrimages has always been a human characteristic. People have long trodden paths to destinations that promised miracles or penance, or to atone for sins. And even in this rational age, people are drawn on spiritual quests to the sacred sites of the world. In the Christian world, few sacred sites are more famous that Santiago de Compostela in Galacia, northern Spain. Pilgrims have walked this route for more than 1000 years. And nowadays, over 100000 pilgrims annually make the journey that ends at the cathedral in Santiago de Compostela. What draws them there?