Planes of the World
From Podpedia
The universe is made up of many different planes of existence. Some are closely related in how they affect each other, while others have only small effect on the other planes
The Natural World
The Feywild
The Underdark
Home of the Drow
The Feydark
The Moon
Home of Lunar God as well as the Exilarchy of Cogs
The Astral Sea
Home of the Gods and their holy cities.
Others:
Elemental Chaos
Realm of the elemental earth, fire, wind and water.
The Shadowfell
Domain of the Raven Queen