Santa Tracker website. The site displays a map of where Santa (if he was real) is traveling from his home at the North Pole. The Santa Tracker site shows you where Santa is in relation to your location at any given time. One of the neat educational tie-ins is that you can click on Santa's current location to learn more about that place. The location information is provided by National Geographic.
The Santa Tracker Christmas Traditions website offers a small collection of lessons about Christmas traditions around the world.
Outside of the Christmas season, use the Google Earth Flight Simulator to tour the world from an aerial perspective. The Google Earth Blog offers an extensive tutorial on how to use the Google Earth Flight Simulator.