This is actually a very cool little tool. If you’ve ever read books and wondered where the places in them were, Google Books has added a feature where they’re beginning to map many of the locations mentioned in Google Maps.
The blog article where this is mentioned lists only 8 books that Google has mapped. Even so, this is a cool little tool to help you understand the books you’re reading, and it should grow into something very useful.
If you don’t believe it, check out their map from The Travels of Marco Polo.