The world is not beautiful, therefore it is. And destination is a state of mind... Kino wanders around the world on the back of Hermes, an unusual, anthropomorphic motorcycle. During their adventures, they find happiness and sadness, pain and decadence, violence and beauty, and above all, truth. Through it all, they never lose their sense of freedom.
While Kino no Tabi is technically a novel, I'm including this series in my manga collection because it fits in there better than anywhere else in my collection. :P