I read a wonderful travel book recently: Nicolas Bouvier, The Way of the World. It's about two guys in the 1950s who get a car and drive from the Balkans to India, stopping off along the way to work. Absolutely full of fascinating details.

The Scent Trail by Celia Littleton is really interesting: a woman buys a bespoke perfume, and visits the various places around the world where its ingredients originated.