Neolithic

Called the "Armenian Stonehenge," this ring of menhirs pierced with holes may be a prehistoric astronomical observatory.

This 5,300-year-old tomb with mysterious carvings crowns an Irish mountain.

A mysterious Neolithic tomb is perched along the edge of a modern golf course.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

A Neolithic burial site built 1,000 years before Stonehenge.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

One of the great treasures of Neolithic art lies within this carefully constructed pile of rocks.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

Enter the world under the hill at this ancient UK burial chamber.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.