We have enjoyed finding out all about Stonehenge. Did you know that work on Stonehenge started around 5,000 years ago but it took over 1,000 years to build, in four long stages? Archaeologists beiieve that the final changes were made around 1,500BC, in the early Bronze Age. We have enjoyed finding out how Stonehenge was built and what it was used for. Did you know that the bigger sarsen stones weigh as much as four African elephants? We created our own silhouette pictures of Stonehenge.