From The Art and Popular Culture Encyclopedia
Neverland (also spelled Never Land or expanded as Never Never Land) is a fictional world featured in the works of J. M. Barrie and those based on them. It is the dwelling place of Peter Pan, Tinker Bell, the Lost Boys, and others. Although not all people in Neverland cease to age, its best known resident famously refused to grow up, and it is often used as a metaphor for eternal childhood (and childishness), immortality, and escapism.
It was introduced as 'the Never Never Land' in 1904 performances of the theatre play Peter Pan, or The Boy Who Wouldn't Grow Up by Scottish writer J. M. Barrie. In his 1911 novelization Peter and Wendy, Barrie referred to 'the Neverland', and its many variations were 'the Neverlands'.