Newgrange

County Meath, Ireland
Newgrange is one of the most notable archeological monuments in Europe. Named in Gaelic Uaimh na Greine (Cave of the Sun), the great passage tomb stands on a low hillock beside the River Boyne in County Meath, Ireland, about 9 miles (14 kilometers) from the sea. Newgrange was built around 3150 b.c., making it as old as some of the neolithic temples on Malta and much older than the pyramids of Egypt. It is a dramatic testimony to the ancient Celts scientific and architectural sophistication. Its designers employed great mathematical skills to create such an uncannily accurate astronomical instrument of gargantuan scale. It forms the center of Br