The old church and graveyard at the summit of the Hill of Tara in Meath, Ireland.
Part of the historic UNESCO World Heritage Site known as The Boyne Valley (or Brú na Bóinne - Palace of the Boyne), it's situated not far from some of Europe's most important prehistoric megalithic sites like Newgrange, Knowth, Dowth, Fourknocks and Loughcrew.
The site is a complex of Neolithic mounds, chamber tombs, standing stones, henges and other prehistoric enclosures. At over 5,000 years old, the site predates both the Egyptian pyramids and Stonehenge and was built with sophistication and a knowledge of science and astronomy, which is most evident in the passage grave of Newgrange.
Newgrange is the central mound of the Boyne Valley passage grave cemetery, but many other passage graves exist in the environs, including Knowth and Dowth which are of comparable size to Newgrange. Each of the three main megalith sites have significant archaeoastronomical significance. Newgrange and Dowth have Winter solstice solar alignments, while it is claimed Knowth has an Equinox solar alignment. In addition, the immediate environs of the main sites have been investigated for other possible alignments. The layout and design of the Brú na Bóinne complex across the valley has also been studied for astronomical significance.