Ancient Observatories Gallery

Imagery--Satellite
Source: SpaceImaging /GeoEye
Ancient Observatories Gallery is a source for ancient ruins and other locations observed from space. Images can be downloaded and saved for offline usage. Locations include:
+ Chichen Itza, Mexico
+ Machu Pizu, Peru
+ Stonehenge, UK
+ Easter Island, Chile
+ Casa Rinconada, Chaco Canyon, New Mexico, U.S.
+ Several others (via Resourceshelf)