Where do I start. . .
Are you getting a car? If you are, make sure to drive up the west coast. There are some beautiful, famous places to see - The Ring of Killarney, the Burren,The Cliffs of Moher, Clifden, Sligo and on into Northern Ireland. A lot depends on how much time you have. There are a lot of places to see if you have thetime.
In the Dublin area - Slane Castle. We took the bus, it's a long trip by bus but the countryside is pretty. Of course Hanover Quay and the fan wall. Notto mention the construction of the new studio complex. But I'm sure the link posted earlier will