I will be taking my first trip to Ireland in July with my sister. We will not be renting a car and will be relying on public transportation. We will arrive in Dublin and staying there for 3 nights before moving on to Castle Leslie then Galway then back to Dublin before we fly home. I am hoping to see Dublin in a day leaving me two days to either take a day tour of Newgrange or Giants Causeway. I would also like to see Cork and Waterford. So my question is Do I take a day trip to a historical site or do I take a train to a different city and spend my day there exploring? I know it is hard to answer which would be better to see but any help would be appreciated since I don't have the time to do them all. Thank you to anyone that can give me an opinion.