A travel book is a book that puts you in the shoes of the traveler, and it's usually a book about having a very bad time, having a miserable time, even better. You don't want to read a book about someone having a great time in the South of France, eating and drinking and falling in love. What you want to read is a book about a guy going through the jungle, going through the arctic snow, having a terrible time trying to cross the Sahara, and solving problems as they go.