1. Newgrange
Newgrange, a prehistoric monument in County Meath, Ireland, was constructed around 3200 BC, making it older than both Stonehenge and the Egyptian pyramids. This passage tomb features a 19-meter-long passage leading to a central chamber, all encased within a massive circular mound. Notably, during the winter solstice, sunlight enters through a roof-box above the entrance, illuminating the inner chamber—a testament to the builders’ advanced understanding of astronomy. For more information, visit the World Heritage Convention.
