[truehappiness]

思いこがれた桃源郷は強くてとても冷たい風が

This is the Japanese line.

maikaru previously translated this as Shangri-La.

桃源郷

Means "paradise on Earth" apparently.

http://ja.wiktionary.org/wiki/Xanadu
Commonly translated as "Xanadu" as well.

The origins of Xanadu:
[After Xanadu, a place in "Kubla Khan," (1798) a poem by Samuel Taylor Coleridge.]