Mount Celestia

In Dungeons & Dragons, the fantasy role-playing game, Mount Celestia or more fully, the Seven Mounting Heavens of Celestia, or even the Seven Heavens is a lawful good-aligned plane of existence. It is one of a number of alignment-based Outer Planes that form part of the standard Dungeons & Dragons (D&D) cosmology, used in the Planescape, Greyhawk and some editions of the Forgotten Realms campaign settings.

The plane known as the Seven Heavens was mentioned for the first time by name in the article "Planes: The Concepts of Spatial, Temporal and Physical Relationships in D&D", in The Dragon #8, released July 1977. In the article Gary Gygax describes the plane as one of the "Typical higher planes". The plane was mentioned again in an appendix of the known planes of existence in the original (1st edition) AD&D Players Handbook, published in June 1978, where it was described as "The Seven Heavens of absolute lawful good".

Celestia is the ultimate in law and good. All aspects of Celestia are beautiful and perfect; it is where the souls of many creatures of lawful good alignment go to after death. It is home to numerous celestial creatures including various types of archons, the petitioners of this plane.

As an outer plane, Celestia is spatially infinite, further consisting of seven infinite layers (or sub-planes). The seven individual layers form a colossal (perhaps infinite) mountain that rises from an infinite sea of holy water on the bottommost layer, to the summit on the topmost layer. Ascending the mountain is analogous to travelling through subsequently higher or 'deeper' layers to the top. Each of the different layers consists of various beautiful mountainous environments becoming more breathtaking the higher the mountain is ascended. Celestia’s first (bottommost) layer shares borders with the neighbouring planes of the Peaceable Kingdoms of Arcadia and the Twin Paradises of Bytopia; travel is possible between Celestia and these planes at certain locations.

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