We are just back from an overnight stay in Cork.
We stayed with one of our daughters and her boyfriend and they brought us on two fantastic little tours in the space of 24 hours.
Both of these tours were well worth the time and money.
For example, in Cork City Gaol things were so bad for the peasants and ordinary persons after the famine that they committed petty crime to be committed to prison where they could enjoy some food and shelter.
I would strongly recommend a trip to both of these locations and they also have the advantage of being relatively close to each other, well within walking distance.