Leave the hustle and bustle of Dublin city and visit the UNESCO world heritage sites of the Boyne Valley home to Newgrange, Knowth, Dowth and Loughcrew Neolithic tombs. At Newgrange, explore the passage and chamber, which illuminates the innermost chamber revealing ancient artwork. Walk around the one-acre site containing the tomb, and see the 5000-year old roof, still intact and waterproof.  After lunch in Slane, continue further into the Boyne Valley to the Hill of Tara, the seat of Celtic Kings of Ireland including Brian Boru. Move on to Trim Castle, the largest Norman castle in Ireland. Explore the inside, and head up the spiral staircases to the dining halls and sleeping chambers of the De Lacy stronghold. Finish up the day with afternoon tea in the luxury Dunboyne Castle en-route back to Dublin.  Remember that this private tour is completely customizable to your requirements, and this is a suggested itinerary.