Newgrange is a prehistoric monument located in County Meath, on the eastern side of Ireland, about one kilometre north of the River Boyne.
It was built around 3200 BC , during the Neolithic period. There is no agreement about what the site was used for, but it has been speculated that it had some form of religious significance because it is aligned with the rising sun on the winter solstice, which floods the stone room with light.
Newgrange is also older than Stonehenge and the great pyramids of Giza. It is in fact just one monument within the Neolithic Bru na Boinne complex, alongside the similar passage tomb mounds of Knowth and Dowth, and as such is a part of the Bru na Boinne UNESCO World Heritage Site.
Newgrange also shares many similarities with other Neolithic constructions around Western Europe, such as Maeshowe tomb in Orkney, Scotland and the Bryn Celli Ddu site in Wales. Many archaeologists have believed that the monument had religious significance of some sort of another, either as a place of worship for a "cult of the dead" or for an astronomically-based faith.
The archaeologist Michael J. O'Kelly, who led the 1962-1975 excavations at the site, believed that the monument had to be seen in relation to the nearby Knowth and Dowth, and that the building of Newgrange "cannot be regarded as other than the expression of some kind of powerful force or motivation, brought to the extremes of aggrandizement in these three monuments, the cathedrals of the megalithic religion.