Newgrange is a prehistoric monument in County Meath, Ireland, about one kilometre north of the River Boyne. It was built about 3200 BC,during the Neolithic period, which makes it older than Stonehenge and the Egyptian pyramids. Newgrange is a large circular mound with a stone passageway and chambers inside. The mound has a retaining wall at the front and is ringed by 'kerbstones' engraved with artwork. There is no agreement about what the site was used for, but it has been speculated that it had religious significance.