Stonehenge found on England’s Salisbury Plain in Wiltshire, Stonehenge is a huge man-made circle of standing stones. Built by our ancestors over many hundreds of years, it’s one of the world’s most famous prehistoric monuments. And one of it’s biggest mysteries, too! Work started on this super stone circle around 5,000 years ago in the late Neolithic Age – but it took over 1,000 years to build, in four long stages! Archaeologists believe the final changes were made around 1,500BC, in the early Bronze Age. I think Stonehenge is one of the most famous and one of my favourite monuments in the world.