Many books contain real and fictitious locations. In Thomas hardy's books Dorchester is Casterbridge (The Mayor of Casterbridge) Salisbury is Melchester. Many London Locations exist in Harry Potter books and Douglas Adma's Dirk Gently books. So I propose a walking tour guide with indications of which book/chapter/page the action that takes place at that location. Simultaneous;y encouraging reading, exercise and tourism.