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 biggest mystery is why they built Stonehenge. Some say it was a sacrificial altar or that it was an astronomical tool, back in the 18th century it was even proposed that Stonehenge was used as a gallows.
What we do know about Stonehenge is that it is aligned with many astronomical events. One alignment is the sun on the summer solstice rising directly over the heel stone (A) viewed from the Altar stone (B).
Stonehenge lies on the largest ley line in Britain. This ley line runs down the longest portion of Britain. Fourteen or so other ley lines meet at Stonehenge.
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 lintel stones were erected and the bluestones set up into the Stonehenge we see today.