The latest experiment (citytours.googlelabs.com) from Google Labs suggests multi day travel itineraries using Google maps.
Google is becoming more involved with travel. If you’re making a trip to Paris France, for instance, you can let City Tours take you from the Pantheon, the Picasso museum, to the La Cinémathèque française and more. All sites are within easy walking distance from our hotel. You can customize your itinerary by adding or removing popular places to visit from its list, or you can type in your own spot. You can also divide a five-day trip into a day-by-day itinerary. It’s a quick and easy primer for those who are first-time visitors to a city.
Here is a link to google city tours.