The thread on films here started me thinking because I'm more likely to think about going someplace because of a book than a film.
I've seen elsewhere about people traveling inspired by mystery novels with really local characters like Inspector Maigret or the Swedish Millenium Trilogy, but I think that more people are probably inspired by things they remember from history books or other novels. Some I can think of are The Girl with a Pearl Earring, which made the idea of the Netherlands more intriguing, and some of Barbara Tuchman's books on European history.
What are yours?