This plane is the infinite starry expanse visible in the night sky. It is a vast silvery sea with various domains floating within it. Creatures with origins in this realm are known as immortal.
Locations in the Astral Sea
Arvandor, the Verdant Isles – Realm of Corellon, Sehanine, and Melora.
The Nine Hells of Baator – Realm of Asmodeus.
Celestia, the Radiant Mountain – Realm of Bahamut, Moradin, and Kord.
Chernoggar, the Iron Fortress – Battleground of Bane and Gruumsh.
Elysium, the Elysian Fields – Realm of Avandra.
Hestavar, the Bright City – Realm of Pelor, Erathis, and Ioun.
Tytherion, the Endless Night – Realm of Tiamat and Zehir.