Brú na Bóinne - a place where all contemporary architects should pay accolade to the prehistoric pioneers. Covering 780 hectares and enclosing around 40 passage graves, it's not only the biggest megalithic sites in Europe but also one that predates even the Egyptian pyramids. Constructed with outstanding classiness and a bewildering knowledge of science, the multifaceted consists of Neolithic compartment tombs, hedges, standing stones and countless other prehistoric constructions, the most noteworthy of which is questionably the passageway grave of Newgrange dating from as early as the period between circa 5500 and 2900 BC. A guided excursion reveals details you'd never have though could be true of people of that time!