Dragon Eyrie

The Dragon Eyrie was the home of the dragon pantheon, manifesting as a vast mountain surrounded by wispy clouds.

Dragon Eyrie links
There were several "soft borders" connecting Tiamat's realm in the Dragon Eyrie with Avernus on the plane of the Nine Hells. Dragon Eyrie also contained links to Arvandor and Heliopolis.

Inhabitants
Around the mountain flew the spirits of departed dragons. Other departed souls whose destination was the Dragon's Eyrie included half-dragons, dragonkin, and other forms of dragonkind. Khaasta and abishai also dwelled on this plane, and living planar dragons of all kinds.

Realms of the Dragon Eyrie
The mountain was divided into four major regions: the dark roots, the lower reaches, the middle crags, and the peak.

While the Dragon Eyrie was presumedly the home of all draconic deities, only the following realms have been described in Forgotten Realms sourcebooks. A few other realms, such as the palace of Bahamut, were described in Planescape sources.

Hlal's realm
Hlal, trickster god and messenger deity, lived in the lower reaches with her brass dragon and copper dragon petitioners. The spirits of red dragons, blue dragons, and black dragons lived in various portions of the lower reaches as well.

Null's realm
Null, god of death, ruled the entirety of the mountain's peak, along with white dragon and silver dragon petitioners attracted to the cold air and permanent snow cover.

Task's realm
Task, god of greed, lived in the middle reaches in a volcanic region known as the Furnace. The spirits of red, gold, and bronze dragons lived here as well, attracted by the heat and lava.

Tiamat's realm
Tiamat's realm, also called the Dragonspawn Pits of Azharul, was the home of the spirits of chromatic dragons who revered Tiamat above all others.

History
The Dragon Eyrie disintegrated from the effects of the Spellplague. Bahamut now resides in Celestia, and Tiamat in Banehold.

Publishing history
When they were first introduced in the Draconomicon, the realms of the various draconic deities were scattered throughout the planes: Asgorath on an unknown plane, Astilabor on Limbo, Garyx in the Abyss, Hlal in Olympus, Kereska in Limbo, Lendys in Nirvana, Null in Gehenna, Task in Pandemonium, Xymor in the Seven Heavens, Zorquan on the Prime Material Plane, and Tiamat in the Nine Hells. That book (which bore the Forgotten Realms label) went into great detail on the draconic afterlife, saying that a dragon's spirit (called its anima) traveled to the outer plane most appropriate to its alignment and remained there for a time equal to its mortal life. During that time, its memories and personality slowly faded, one day per day, in the opposite order in which the living dragon had gained them. When completely stripped bare of its worldly experiences, it was reincarnated on the mortal plane as soon as a new mortal body was available. Because the draconic population in the Realms has decreased over the millennia, however, there is a large "waiting list" of animae ready to be born. These "pure" animae resemble perfectly formed dragons of their species, and are used as messengers and servants of the draconic gods.

The 3rd edition cosmology change placed all draconic deities on the same outer plane. The information in this article comes from Player's Guide to Faerûn, unless otherwise stated.