To view the archaeological sites you need to download the Google Earth application and set it up on your computer first. A basic version is available for free: http://earth.google.com/
Other cultural heritage files for Google Earth:
Sorted by country – your editor’s pick of sites that can actually be seen (unlike many of those in the files below)
UNESCO World Heritage Sites
Cultural and natural – NB some locations are quite inaccurate.
ArchAtlas on Google Earth
Mostly Middle East and many not visible.
Global Heritage Fund
Sites at risk