Demos Oneiroi (literally
Land of Dreams), in Greek Mythology, is a region located in Hades, according to sources in the vicinity of the White Island, on the way taken by the wandering souls after crossing the river Okeanos and passing the Gate of the Sun towards the Asphodel Meadow. The Land of Dreams is inhabited by the
tribe of dreams (Oneiroi), namely, the three gods of dreams created by Nyx by parthenogenesis: Phantasos (God of dreams of the imagination), Icelus (God of nightmares) and Morpheus (God of dreams). They would be the attendants of Hypnos, the god of sleep.