The Cottage of the Children
From Tolkien Gateway
The Cottage of the Children or The Cottage of the Play of Sleep was a place from the early legendarium, situated not far from Kôr (the original name of Tirion). There was a magical lane, called Olórë Mallë ('The Path of Dreams'), through which mortal children could come from the Great Lands (i.e. Middle-earth) to Valinor. At the end of The Path of Dreams, there could be found The Cottage of the Children.