Brú na Bóinne: Our tour bus picked us up the next morning near our B&B and took us first to the most famous of the mounds, Newgrange, with its nearby visitor center and museum. Entry to the site is permitted only with authorized tours, but they are well worth the cost. We got the first tour of the day, so the site was relatively uncrowded. The Newgrange Mound measures 262 feet across and almost 43 feet high. Like the other principal mounds in the area, much of it was constructed using enormous non-native stones brought laboriously from far away by large teams of hard working stone-age inhabitants around 3200 BCE, long before the Egyptian pyramids were built. Stonehenge in England is over a millennium more recent.