Diaspar is the setting for Arthur C. Clarke's 1953 novel The City and the Stars. The last city on an Earth turned desert planet a billion years in the future and perhaps the last human settlment in the universe, Diaspar is an insular society with a "frozen culture." Residents content themselves with adventures in virtual reality projected from the Memory Banks. Where once humanity ruled a Galactic Empire, the alien Invaders long ago drove it back to Earth, where only Diaspar survives.