Brú na Bóinne (English: Palace of the Boyne) is an internationally important complex of Neolithic chamber tombs, standing stones, henges and other prehistoric enclosures located in a wide meander of the River Boyne in Ireland. It is a World Heritage Site, containing what have been described as the national monuments of Ireland.
The site covers 780ha and contains around 40 passage tombs as well as other prehistoric sites and later features. The most well-known sites within Brú na Bóinne are the impressive passage graves of Newgrange, Knowth and Dowth all famous for their significant collections of megalithic art. 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.
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