Newgrange, a 5,200-year-old passage tomb in Ireland's Boyne Valley, is a Stone Age marvel older than Stonehenge and the Pyramids of Giza! Built by ancient farmers, it's not just a tomb but an ancient temple with astrological significance. The winter solstice sunrise illuminates its chamber through a roof-box, marking the new year and symbolizing life's triumph over death. Visitors can experience this magical event on guided tours from the Brú na Bóinne Visitor Centre, where they can also explore other nearby Neolithic sites like Knowth and Dowth.