I loved visiting Cork as I've heard from everyone that Dublin isn't a good impression of Ireland. My friends and I walked around the city a bunch and had a great time. Watch out for some creepy people as we had a couple encounters on the street with some strange men that just wanted to talk to us.
Insider Tip:The wind is very strong and the hills are very steep! An umbrella isn't going to work, so make sure you have a hood and raincoat!