Stonehenge is located on the Salisbury Plain. It is a great mystery who built this massive stone circle. Theories include Druids, the Greeks, U.F.O.s and Atlanteans. Although the bigger mystery is why they built stonehenge. Some say it was a sacrificial altar or that it was an astronomy tool, back in the 18th century it was even proposed that stonehenge was used as a gallows.
Stonehenge was built in three parts over a period of 1000 years. The first part was just a mound, ditch and aubrey holes that were dug to make a circle. The second was when timbers were erected systematically all inside the circle. The third was when the lentel stones were erected and the bluestones set up into the Stonehenge we see today.