Somewhere in Scandinavia. I don't know much about the area other than they score among the highest on self-reported happiness indicies[0]. I'm curious about what cultural differences are responsible for that result, and I suppose I'd like to enjoy them for myself.
Living in Copenhagen, Denmark I'm not sure that moving here necessarily will make you more happy. Maybe the results would be different if one looked at what makes expats happy when moving to a new country.