It was Clontarf castle it is in the city of Dublin we went on a tour with Princess and had them drop us off about a 2 blocks from the castle. The castle has and old part and a newer addition. The reception is in the new part and our room a king suite with the huge bed, dormer roof and claw footed tub was in the old castle part and was amazing! We were able to explore all the nooks and crannies of the castle and had dinner there. The next morning we went to Trinity college for the Book of Kells that tour we booked on our own. Then we walked around Dublin on our own. Princess had a free bus in town that we got on to take us back to the ship. I loved the experience it is one I will never forget!