Tir na Nog

Adjacent Zones
 * Connacht (North)
 * Lough Derg (East)

Trivia
Tír na nÓg (Old Irish Tír inna n-Óc: meaning "The Land of the Young") is the most popular of the Otherworlds in Irish mythology. It is perhaps best known from the story of Oisín, one of the few mortals who lived there, who was said to have been brought there by Niamh of the Golden Hair. It was where the Tuatha Dé Danann settled when they left Ireland's surface, and was visited by some of Ireland's greatest heroes. Tír na nÓg is similar to other mythical Irish lands such as Mag Mell and Ablach.

Source: http://en.wikipedia.org/wiki/T%C3%ADr_na_n%C3%93g