I love Google Earth, and with the help of a friend, have located most important biblical sites and many other historical sites as well.  I have hopes of getting them in sufficient order to share, but time has not yet permitted.  (I know that there are places on the web that distribute files with the locations but some that I have looked at are not reliable.)  But a friend just let me know that some of the terrain is Turkey is much improved.  So if you’ve looked in the past, you might try again.  Ephesus looks great, and there’s finally sufficient resolution to see Colossae.  A few more for fun: Laodicea, Antioch on the Orontes, Haran, and Carchemish.  (The links are kmz files which you can import into Google Earth for the site’s location.)