WordNet (r) 3.0 (2006):

never-never land
    n 1: a pleasing country existing only in dreams or imagination
         [syn: never-never land, dreamland, dreamworld]

Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "Never-Never land":
   Agapemone, Arcadia, Big Rock-Candy Mountain, Canaan,
   Cloudcuckooland, Cockaigne, Eden, Eldorado, Erewhon,
   Garden of Eden, Goshen, Happy Valley, Land of Youth, Laputa,
   Neverland, New Atlantis, Pandemonium, Quivira, Shangri-la, Utopia,
   cloudland, dreamland, dystopia, faerie, fairyland, heaven,
   kakotopia, kingdom come, land of dreams, land of enchantment,
   land of faerie, land of plenty, land of promise, lotus land,
   millennium, paradise, promised land, utopia, wonderland