Stonehenge is a prehistoric monument located in the English county of Wiltshire, about 3.2 kilometres (2.0 mi) west of Amesbury and 13 kilometres (8.1 mi) north of Salisbury. One of the most famous sites in the world, Stonehenge is composed of earthworks surrounding a circular setting of large standing stones. It is at the centre of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds.
Archaeologists had believed that the iconic stone monument was erected around 2500 BC, and their thoughts on how it got together are each different. It is truly a masterpiece and a marvel that remains a mystery.

Some think that 'aliens' formed it together, while others believe that it was their from the beginning. The truth will remain unknown as long as it stands.