I'm assuming you're talking about visiting rather than living in a location permanently. As it stands, I already feel that I live in probably the best city in the world: Sydney, Australia. This has been my home for most of my life allthough I have lived in England, New Zealand, Papua-New Guinea and even spent a year on a sub-Antarctic island.
However, like you, I'd love to visit Ireland. It's quite a small place from all accounts; about as big as our smallest Australian state, Tasmania. However, it does have appeal for me.
Actually, I'd like to tour the USA, too. Maybe Canada as well. A six month tour to look around would be wonderful.