Great Wheel

The Great Wheel is the dominant cosmological model in the D&D multiverse. It posits that the metaphysical planes of existence align with the Good-Evil and Law-Chaos axes of morality.

The basic structure of the GW is as follows. The metaphysical world is composed of the Outer Planes, which are structured in alignment with Good-Evil and Law-Chaos.

Likewise, the basic building blocks of the material universe originate in the Inner Planes, which are composed of the Elemental Planes (Air, Earth, Fire, Water) and the Energy Planes (Positive energy and Negative energy).

Then there's the material plane (where we are), and its echoes (the Shadowfell and Feywild). Between the material plane and the Outer Planes lies the Astral Plane; and between the material plane and the Inner Planes lies the Ethereal Plane.

Outer Planes of the Great Wheel
	Lawful	Neutral (L)	Neutral	Neutral (C)	Chaotic
Good	Celestia	Bytopia	Elysium	Beastlands	Arborea
Neutral (L)	Arcadia				Ysgard
Neutral	Mechanus		Outlands		Limbo
Neutral (E)	Acheron				Pandemonium
Evil	Hell	Gehenna	Hades	Carceri	Abyss