The non-profit Wessex Archaeology organization created a virtual fly-over of Stonehenge and vicinity based on LIDAR (Light Detection And Ranging) data collected from the air. From the project page:
During production of the animation, we turned the LIDAR data into a solid 3D model of whole landscape surrounding Stonehenge. Aerial tours of the most famous sites and monument groups were animated in HD (720i) resolution. What is exciting is that much of the upstanding archaeology, from well-preserved barrows to the subtle earthworks of prehistoric field systems, are clearly visible.
To do this, we had to work out how to use the data at 1:1 for our animations (for this kind of task it is often necessary to reduce the complexity of the data by half or quarter (1:2 or 1:4) due to enormous memory and processing requirements). This we achieved, and using lighting techniques we have been able to show the archaeology of the Stonehenge World Heritage Site as it has never been seen before.
The Stonehenge Landscape in 3D (via Daily Grail)