Lothlórien - The realm of Galadriel and Celeborn.  It is the part of Middle Earth most like Valinor in the Undying Lands.

"'There lie the woods of Lothlórien,' said Legolas.  'That is the fairest of all the dwellings of my people.  There are no trees like trees of that land.  For in the autumn their leaves fall not, but turn to gold'...'Lothlórien!' cried Legolas.  'Lothlórien!  We have come to the eaves of the Golden Wood.  Alas that it is winter!'  Under the night the trees stood tall before them, arched over the road and stream that ran beneath their spreading boughs.  In the dim light of the stars their stems were grey, and their quivering leaves a hint of fallow gold." ~The Fellowship of the Ring, Book II, chap. 6 (Lothlórien)