Ghiscari religion

"The tradition of funeral rite. Proper burial in the Temple of the Graces."

- Hizdahr zo Loraq

The Ghiscari religion is followed in Slaver's Bay, where the slaver-cities Meereen, Yunkai, and Astapor descend from the ancient Ghiscari Empire.

The religion is centered around priestesses known as Graces, who congregate in a Temple of the Graces (apparently a single temple in each major city).

In the books
In the A Song of Ice and Fire novels, few details have actually been given about the local Ghiscari religion in Slaver's Bay. It is mentioned that it centers around priestesses known as Graces, who meet in a Temple of the Graces in each city, though it isn't clear if their is a widespread hierarchy uniting the religion across the region.

Otherwise, little has even been stated about the deities that the religion worships, other than describing them as the "gods of Ghis" (referring to Old Ghis, the ancient capital of the old empire). Moreover, little is known about the tenets or cultural beliefs of the religion (even compared to other Essos-based religions such as the Great Stallion of the Dothraki, or the Lord of Light religion).

Different sub-orders of Graces exist at the same temple, wearing different color robes to denote their function. The Blue Graces wear blue robes, and function as healers. The Red Graces are cult prostitutes. They are the only Graces that are allowed to have sex, while the others are sworn to chastity. The Green Grace is the high priestess, and there is only one Green Grace in each city.