Dublin

Dublin is a great city for a long weekend trip.  Otherwise, rent a car and explore more of the country.  If you stay in Dublin though, I would recommend the combo pass you can get at the airport.  It's part Hop On/Off Bus as well as working with the public buses.  The Hop On bus is a good one to do here.  Some cities, it's not worth the price, but here in Dublin, I thought it was.  Visit the Jameson Whiskey and Guinness Factories.  We stayed outside the downtown area, but right near a bus stop.  It worked out perfectly and saved us some cash.