1) Cthulhu Mythos location 
Serannian is a fictional city in H. P. Lovecraft`s Dream Cycle and appears in such stories as `Celephaïs` and The Dream-Quest of Unknown Kadath. It is a sky-kingdom in Earth`s Dreamlands and lies just off the coast of Ooth-Nargai near Celephaïs. Serannian is a `pink marble city of the clouds, which is built on that ethereal coast where the ...