Maps

Google Maps - Map Quest - Yahoo Maps

Google Earth - a free download program that allows you to view satellite images from all over the world. Just Click on the "Get Google Earth Free Version"

Microsoft Virtual Earth 3D Beta - amazing 3D models of various U.S. cities. or following this preview link to drive a car around the city!!!

G Maps Pedometer - find the distance from one point to another. 

Tour Guides:
Italy Tour Guide - Access Italy provides private and exclusive tours throughout Italy