"An Inhabitant of Carcosa" (1886) is a short story by, writer and journalist, Ambrose Bierce (1842-1914).
A man awakens from a sickness-induced sleep to find himself lost in the mythical city of Carcosa.
The concept of Carcosa was subsequently borrowed by Robert W. Chambers as the setting of his fictional play, "The King in Yellow", and features heavily in many of the stories in the book of the same name.
H. P. Lovecraft also wove the Carcosa mythology into his Cthulhu Mythos stories.