The World

The creation of Illuvatar and the area the Valar inhabited. Middle-Earth is contained here.

Valinor

The land of the Valar; only immortals can live there, save a handful of mortals. The Valarindi and some Eldar live there. The Two Trees were planted here and were destroyed by Morgoth and Gloomweaver. It was created when Morgoth destroyed the original home of the Valar. It surrounds Middle-Earth.

Middle-Earth

The setting of most of J.R.R. Tolkien's stories, created by Morgoth when he split it from Aman, the land of the elves called the Eldar. Many the details of the shape of Middle-Earth, where it was a continent on a sphere, a flat area, and its relation to Valinor and the universe, generally vary somewhat over J.R.R. Tolkien's development of them.

Walls of the World

The invisible boundary of The World that can only be crossed...