Around the World in 80 Books!
When I visited, Vienna,I asked the local English book store proprietor to recommend the single novel (not a travel guide and not a history or geography) that would best serve as a fictional travel guide of the city and a great souvenir to remember the city by - a novel in which the city was just as important as the characters! She hit the ball right out of the park when she suggested "A Death in Vienna" by Frank Tallis.
Ever since then, I've tried to do the same thing with every city I've visited with wildly varying degrees of success. Here are the ideas!
I'm still looking for suggestions for Santiago, Buenos Aires, Budapest, Interlaken and, believe it or not, Rome. Let's hear 'em, you well-read travelers! I'll add books to the list as I receive good suggestions.