Google created a visual of the U.S. Presidents within Google earth. Not only does it show all 44 U.S. Presidents and their birthplace but also a 3D map of the White House. My kids will love this, what a great way to learn about the Presidents. Also, if you have not used Google Earth you will be amazed by the 3D White House. You can rotate around the White House and zoom in as well as out.
Here is the link to the U.S. Presidents on Google Earth.