Newgrange, known as Bru na Boinne, or Palace of the Boyne, was built by Neolithic people about 5,000 years ago. The window at center lets in a ray of dawn light just before 9 a.m. each Dec. 21, as long as the sky is clear.
Read the article: On the road in Ireland: Country offers surprises, history, friendliness and wide vistas
