Paju Book City, an hour's drive north of Seoul in South Korea, takes the concept of 'book town' to a totally new level. There are 900-plus book-related businesses located here - often in elegant, modern architecture - in the hub of South Korea's publishing industry. There are two literary festivals a year, and the Book City is full of readers every weekend. This is the 'Forest of Wisdom', a library of books donated by  publishers in Paju which is open to the public.