Avoid the crowds and explore Irish history in peace on this 2.5-hour Book of Kells and Dublin Castle exterior tour. Visit the Trinity College Library, home to the famous Book of Kells — widely considered among the most important of all Ireland’s ancient treasures. Listen as your guide brings medieval Ireland to life, shedding light on the Book of Kells’ profound historical significance. Afterward, enjoy a guided walking tour around Dublin Castle’s mighty exterior. Visit the gardens and yards, and learn of the castle’s role as court, fortress, treasury and jail.