Newgrange in Co. Meath in Ireland is 1500 years older than Stonehenge and 500 years older than the pyramids in Egypt and far more interesting and significant than both, the way it was built, the incredible intelligence and talent taken to build it, there are hundreds of stone circles just as amazing as stone henge all around Ireland, but the passage tomb at Newgrange is something else altogether, it was meticulously made around 3000 BC and the Stone Age people had to study the moon and stars, The 500 pound rocks were transported from about a 100 miles away with nothing more than hands, the roof is made by corbelling and 5000 years later not a drop of water has got inside, it is amazing, they were incredible architects, builders, geologists, astronomers etc. Newgrange is a truly remarkable site which deserves to be the top of this list.