The holy cities are large islands on the Astral Sea that are the homes and domains of the gods.
“Sha-Lai, the Panopolis, the City of Cities, is Erathis' holy city on the astral sea. It is...Sha-Lai
“The Demonweb is the holy city of Lolth, the goddess of nightmares. It is largely populated by...Demonweb