Dolmens and burial chambers dot the Irish countryside and fascinate all. Once dismissed as 'rude monuments' shrouded in mystery, fresh archaeological interpretations provide new ways of understanding these ancient structures. This fully-illustrated book looks at the builders themselves, how the megaliths were created, the rituals that took place there, and finally why people stopped building them. All key sites in Ireland are discussed with a list of the 100 'Sites Worth Visiting' accompanied by photos, maps, and detailed directions for visiting each site.