Hi there, I was in ireland for 6 months on a horseback riding team about a year ago. I was in Adare Co. Limerick, Ireland and liked the little village quite a bit. There are pubs wherever you go. Dublin and Limerick are the 2 largest cities, though I didn't like Dublin much. So crowded! I worked for a while at the Adare Manor:
http://www.adaremanor.com and also at Clonshire Equestrian Centre (http://www.clonshire.com. This will have links to more sight seeing in Adare) Even though it was really hard work, I learned a lot and was a good before-college experience. There's so much to see, really gorgeous countryside. Have fun on your trip, dont forget your umbrella!