The Nightmare Before Christmas leaves some pretty huge details unexplained, as the story introduces several holiday worlds, but only actually explores two. The Nightmare Before Christmas continues to be incredibly popular even 30 years after the film actually debuted. Inspired by a poem written by Tim Burton, the film is a fascinating exploration of a parallel world filled with monsters and ghouls who prepare all year round to celebrate Halloween by crossing into the real world and scaring everyone.
https://screenrant.com/the-nightmare-before-christmas-towns-worlds-explained/
