Restoration work at Stonehenge, Wiltshire
Probably the most famous prehistoric monument in the world. Built in three main phases from about 2950 BC to 1600 BC, Stonehenge has subsequently seen many attempts to repair and replicate it. Some of these have been attempts to discover how it was built, while others, like this restoration work in 1919-1920, have been more cosmetic. This site is now in the care of English Heritage (2010).